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Asian Serial Number Guide

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Asian Serial Number Guide

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Old 10-10-18, 07:19 AM
  #101  
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Component date codes all 84/85 and serial # jibes with Maruishi for 1985.

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Old 10-31-18, 01:23 PM
  #102  
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Hi. may you help me identify my friend's serial number frame
1. located on a straight bottom bracket and there are 2 ellipse holes Y5M85031285 / YSM85031285
and is on the top right head tube E5 E5
and head tube left top down 73 61
then there is a hole holder for the road bike shifters left and right on the frame


example of the shape of a bottom bracket hole

2.there is a straight bottom bracket M23751
there are 3 small round holes forming a triangle. and there are also serials in the drop-out chainstay but I don't know. then the road bike shift holder left and right are bolt pivots

Is this one of the Peugeot and Bridgestone or the other
Please help. Thanks
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Old 11-05-18, 10:09 AM
  #103  
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85 Raleigh: 4L5R081 N (Taiwan)

87 Centurion: N6N7989

88 Centuiron: N7S5606
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Old 11-27-18, 04:33 AM
  #104  
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anybody can tell me what DRT1946 in a tsunoda tristar means?
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Old 11-29-18, 07:07 PM
  #105  
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Originally Posted by T-Mar View Post
Many of you will be aware of my penchant for collecting and analyzing serial numbers. This guide compiles the results of a decade of data collection of pre-1990 Asian serial numbers.
Damm! thats a useful tool! THX T-Mar!
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Old 12-03-18, 10:59 PM
  #106  
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Hi all. Wondering if anyone has any ideas on a serial number P3024249, which is located vertically on the non-drive side of the seat tube. The bike has 1989 Maillard hubs laced to rigida rims, was I'm guessing full Suntour Superbe Pro derailleurs, Sugino Maxy cranks and a Sugino hidden seat post clamp bolt.
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Old 12-04-18, 10:27 AM
  #107  
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Originally Posted by carlycarlcarl View Post
Hi all. Wondering if anyone has any ideas on a serial number P3024249, which is located vertically on the non-drive side of the seat tube. The bike has 1989 Maillard hubs laced to rigida rims, was I'm guessing full Suntour Superbe Pro derailleurs, Sugino Maxy cranks and a Sugino hidden seat post clamp bolt.
This could be reverse engineered several ways. Assuming it is Asian and the 'P' is the company identifier, it could be Pacific, a Taiwanese manufacturer, and the frame date would be February 1983. Pacific is best known for manufacturing some Lotus models during this period, so that would be one of my leading candidates, pending pictures. The component mix suggests that the bicycle has been extensively modified. Maxy cranks would be anachronistic with 1989 hubs and much lower level than Superbe Pro components. If you remove the forks, there may be a date code and/or manufacturer's stamp on the steerer tube. That could increase our confidence in the age and country of origin.
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Old 12-04-18, 02:27 PM
  #108  
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Originally Posted by T-Mar View Post
This could be reverse engineered several ways. Assuming it is Asian and the 'P' is the company identifier, it could be Pacific, a Taiwanese manufacturer, and the frame date would be February 1983. Pacific is best known for manufacturing some Lotus models during this period, so that would be one of my leading candidates, pending pictures. The component mix suggests that the bicycle has been extensively modified. Maxy cranks would be anachronistic with 1989 hubs and much lower level than Superbe Pro components. If you remove the forks, there may be a date code and/or manufacturer's stamp on the steerer tube. That could increase our confidence in the age and country of origin.
thanks for that. Will do some more digging and get some photos
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Old 12-09-18, 07:17 PM
  #109  
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Here are photos. Hope they're clear enough to help. The paint job is awful https://drive.google.com/drive/folde...Wv?usp=sharing
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Old 12-10-18, 11:23 AM
  #110  
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Steve Bauer brand; Whistler model Serial Number FN6xxxx

Identifying Details: has "Tange 900 CR-MO Double Butted Tubes" and "Made in Japan" stickers. Appears to be mid-late 1980s with cantilever brake bosses (front and rear) and braze-ons for low-rider rack on front fork (which has Tange Mangeloy 2001 sticker). Otherwise, I am not the first owner and I am not confident that other parts are all original, but it has Suzue Sealed Bearing Hubs, freewheel, Shimano DT shifters (rear indexed), Tange headset, SR stem, Sakae Randnner Road Champion handlebars.

Does not appear to follow the pattern for Yamaguchi. My guess is that "6" in SN could represent year of production (1986) but is missing characters to be either Fuji or Nissan, and apparent year indicates that it is not Maruishi or Miyata. Tsunodo not eliminated, because no information.

I am inclined to believe that this is a 1986 production, given cantilevers and touring style, but otherwise I have found no information. Ideas?
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Old 12-11-18, 06:40 AM
  #111  
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Originally Posted by Random Tandem View Post
Steve Bauer brand; Whistler model Serial Number FN6xxxx....I am inclined to believe that this is a 1986 production, given cantilevers and touring style, but otherwise I have found no information. Ideas?

Yes, it could be a 1986, as the Steve Bauer brand goes back that far. I should be able to narrow down the era from pictures, as the Steve Bauer models went through three distinct graphics styles during the late 1980s to early 1990s. Once we narrow that down, we will have a better idea which components are likely to be OEM and can then resort to component date codes.
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Old 12-11-18, 10:30 AM
  #112  
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Thanks, T-Mar, for this reply and the incredibly extensive information that this thread represents, I have attached photos of my Steve Bauer



Sorry about the picture quality - I need to get better lighting for photos I am taking during the dark season here in Vancouver.

-Will
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Old 12-11-18, 12:44 PM
  #113  
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Originally Posted by Random Tandem View Post
... I have attached photos of my Steve Bauer.Sorry about the picture quality - I need to get better lighting for photos I am taking during the dark season here in Vancouver.


-Will

The monotone graphics are indicative of 1986-1987. The earliest evidence I have for the brand dates to 1986 and I went back and checked old advertisements to confirm that the graphics changed for 1988. Unfortunately, there were no examples specific to the Whistler, though it was mentioned in a 1986 advertisement.


Regarding components, the crankset looks era appropriate. The Shimano Z-series front derailluer was available during 1986-1987 and the rear Light Action derailleur appears to be a verison introduced in 1987. However, the derailleur appears to SIS compatible while the shift levers appear to be friction, so the rear derailleur may be a replacement. The brakes appear to be later Exage models and may not be OEM. I'd focus on the front derailleur and crankarms for date codes that may provide a clue to narrow down the model year.


BTW, no need to apologize for the photos. They're better than some I've had to rely upon and I'm well aware of the weather in Vancouver, with my son having attended UVic, across the Strait. At least your weather is mild, with average December temperatures being about 10F warmer than my neck of the woods.
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Old 12-11-18, 01:18 PM
  #114  
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Originally Posted by T-Mar View Post
The monotone graphics are indicative of 1986-1987. The earliest evidence I have for the brand dates to 1986 and I went back and checked old advertisements to confirm that the graphics changed for 1988. Unfortunately, there were no examples specific to the Whistler, though it was mentioned in a 1986 advertisement.

Regarding components, the crankset looks era appropriate. The Shimano Z-series front derailluer was available during 1986-1987 and the rear Light Action derailleur appears to be a verison introduced in 1987. However, the derailleur appears to SIS compatible while the shift levers appear to be friction, so the rear derailleur may be a replacement. The brakes appear to be later Exage models and may not be OEM. I'd focus on the front derailleur and crankarms for date codes that may provide a clue to narrow down the model year.
Your posting is the first mention I have seen regarding the Whistler model, which seems to me to be very nice ride. I have many touring bikes from the the 1970s and 1980s (mostly of Japanese manufacture) and this is one of my favourites.

The only components that I have replaced are the shift levers, which WERE 6 speed SIS and now ARE 7 speed SIS, along with changes to the rear freewheel and chain. These were replaced because the plastic teeth that engage them with the frame disintegrated and they ceased to function. I will look at the crankarms and FD to see what they reveal. I assume that the serial number FN6xxxx, since it does not follow one of the patterns in your guide is not helpful (other than the possibility that the "6" indicates 1986). Thanks again for all you do.

-Will

Last edited by Random Tandem; 12-11-18 at 02:25 PM. Reason: clarity
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Old 12-11-18, 09:30 PM
  #115  
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Originally Posted by T-Mar View Post
Regarding components, the crankset looks era appropriate. The Shimano Z-series front derailluer was available during 1986-1987 and the rear Light Action derailleur appears to be a verison introduced in 1987. However, the derailleur appears to SIS compatible while the shift levers appear to be friction, so the rear derailleur may be a replacement. The brakes appear to be later Exage models and may not be OEM. I'd focus on the front derailleur and crankarms for date codes that may provide a clue to narrow down the model year.
I was not able to see any codes on the FD, on account of it being really dirty, but I was able to see the code on the non-drive side crank arm (86C, presumably 1986 MAR) and easily access the codes on the brakes which are model BR-AT50 with date code KB27, which indicates that they were manufactured on 1986 FEB 27, which makes me think that they were probably original equipment for a 1986 or 1987 model. I will check on the FD when I can.

Last edited by Random Tandem; 12-11-18 at 10:02 PM. Reason: to add crank info
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