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Asian Serial Number Guide

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Asian Serial Number Guide

Old 09-23-21, 05:28 AM
  #451  
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Originally Posted by Hareeb_Alzak View Post
Ok, I just posted some pictures in the gallery. Sorry for the half disassembled bike as I just ordered some new parts. Ignore the cheap crank and chainrings (the bike didn't come with any so I pulled them from a Walmart bike I had lying around). The derailleur pictured was the one that came on the bike when I bought it but it was broken so I replaced it. I was mistaken when I said it had Shimano cranks (it has "custom" ones) also it has a Shimano fd. Thanks
Thank-you for the photos. Based on the style of Maruishi logo, it is post 1985. Based on that, in conjuntion with the serial number, it'd be leaning towards 1987.
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Old 09-23-21, 05:59 AM
  #452  
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Originally Posted by 2cam16 View Post
Here you go,T-Mar. Dorado Sherpa with chainstay rollercam. M7B010662
I'm thinking '86-'87?
Based on the serial number I'd eliminate 1986 and go with very early 1987. It looks similar to the MIKI serial number format, though I don't believe I've seen one with 9 characters. Typically, they are 8 characters long.
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Old 09-27-21, 05:49 AM
  #453  
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Dear T-Mar . I have bought frame only 26" it was repainted, the serial number is F9K07134. I have dificult to find the brand.

Its has ​​​​characteristic :
* mark "lung" in the fork drop out, (made in taiwan)
* rear drop out verticaly





Last edited by Seannzz; 09-27-21 at 10:59 PM.
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Old 09-27-21, 02:03 PM
  #454  
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Originally Posted by Seannzz View Post
Dear T-Mar . I have bought frame only 26" it was repainted, the serial number is F9K07134. I have dificult to find the brand.

Its has ​​​​characteristic :
* mark "lung" in the fork drop out, (made in taiwan)
* rear drop out verticaly

Welcome to the forums. Pending more information and preferably photos, my leading candiate would be a 1990 Fuji product manufactured in November 1989.
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Old 10-07-21, 10:20 AM
  #455  
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Hey folks! I was hoping that somebody may be able to give me some insight into this frame that I have acquired. I'm not able to post pictures yet so bear with me on my wonky descriptions hopefully they make sense.

All of my internet searches have led me to believe that all Japanese made Schwinn bicycles have either an 8-digit serial number and a date code that begins with an S, or a serial number that includes an alpha designation for the month or year that it was produced. Please correct me if I'm wrong.

But the frame I got, doesn't have either of those. It is a light blue Schwinn Traveler, has the Schwinn approved made in Japan designations, and has two numbers stamped into it. The first is on the left front fork and reads "L173." The second is on the left rear axle hanger and reads "80 05 00083."

If I were normal, I would assume that this meant that my frame was built in Japan in the first week of December 1973, but I'm not, so here I am. Lol. Anyone have any information that might help me out? All of my time with Google led me here to this guide, which is great, but didn't straighten anything out for me I'm afraid. Thanks in advance!
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Old 10-07-21, 03:00 PM
  #456  
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Originally Posted by Abonnieforclyde View Post
Hey folks! I was hoping that somebody may be able to give me some insight into this frame that I have acquired. I'm not able to post pictures yet so bear with me on my wonky descriptions hopefully they make sense.

All of my internet searches have led me to believe that all Japanese made Schwinn bicycles have either an 8-digit serial number and a date code that begins with an S, or a serial number that includes an alpha designation for the month or year that it was produced. Please correct me if I'm wrong.

But the frame I got, doesn't have either of those. It is a light blue Schwinn Traveler, has the Schwinn approved made in Japan designations, and has two numbers stamped into it. The first is on the left front fork and reads "L173." The second is on the left rear axle hanger and reads "80 05 00083."

If I were normal, I would assume that this meant that my frame was built in Japan in the first week of December 1973, but I'm not, so here I am. Lol. Anyone have any information that might help me out? All of my time with Google led me here to this guide, which is great, but didn't straighten anything out for me I'm afraid. Thanks in advance!
The serial number is consistent with a frame that was manufactured in May 1980 by Kuwahara of Japan. Here's another 1980 Schwinn traveller with the Kuwahara serial number format, though this one would be from July.
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Old 10-07-21, 07:13 PM
  #457  
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Marry me!

Brilliant, a million thank yous!
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Old 10-07-21, 07:13 PM
  #458  
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Marry me!

Brilliant, a million thank yous!

So, what does the other number mean then? Curiosity is my weakness. Or strength, depends how you look at it.
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Old 10-08-21, 07:40 AM
  #459  
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Originally Posted by Abonnieforclyde View Post
Marry me!

Brilliant, a million thank yous!

So, what does the other number mean then? Curiosity is my weakness. Or strength, depends how you look at it.
The other number is believed to be a sequential frame number for the month and year in question. In other words, your frame was the 83rd manufactured during May, 1980.

While my wife has no problems with my acquiring n+1 bicycles, I'm not sure that she would be receptive to n+1 wives. Regardless, I wouldn't go into a blind marriage. Before even considering your proposal, I'd require a full, drive side photo.
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Old 10-14-21, 08:17 PM
  #460  
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T-mar,

What do you think of this number (7D03172) on the lower end of the head tube? I guess it is a serial but I stink at decoding them and appreciate your help. The seller believes it is a Nishiki. I think it is a decent spray paint and there is no head badge or decals of any kind. There are no drive side photos and the machined aluminum piece at the bottom looks like possibly a spacer to make another fork fit because it looks out of place to me but that is just speculation. It has Tru-America Matrix rims but I don't know they are original. It has Shimano 600 aero brake levers and if the derailleurs are 600 I don't think I would hurt myself buying it.

Thanks in advance.



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Old 10-15-21, 06:25 AM
  #461  
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Originally Posted by Chuck M View Post
T-mar,

What do you think of this number (7D03172) on the lower end of the head tube? I guess it is a serial but I stink at decoding them and appreciate your help. The seller believes it is a Nishiki. I think it is a decent spray paint and there is no head badge or decals of any kind. There are no drive side photos and the machined aluminum piece at the bottom looks like possibly a spacer to make another fork fit because it looks out of place to me but that is just speculation. It has Tru-America Matrix rims but I don't know they are original. It has Shimano 600 aero brake levers and if the derailleurs are 600 I don't think I would hurt myself buying it.

Thanks in advance.


Based on the serial number format, in conjuction with other features such as the pump peg, it is a 1987 model manufactured by Matsushita/National of Japan. However, it's much harder to identify the model. The obvious candidate would be a Panasonic DX-5000 based on the New 600EX but in that case I would also expect the New 600EX headset and an integral fork crown. I would have expected the same, had this been a contract built Schwinn Super Sport. It's also possible that the New 600EX is not OEM, though it is period correct. I also can't rule out a crashed bicycle with a replacement fork and front wheel, given the repaint and Matrix rims. It also looks like the headset may have been cobbled together from a few mismatched parts, to accommodate a fork with a slightly longer steering column. To be safe, inspect it very carefully and give it a good test ride. It's unfortunate that there aren't more photos, specifically a good, overall, drive side photo.

Regardless, it's definitely a 1987 frame built in late February by Matsushita/National. Here's a head photo of a 1987 Panasonic DX-5000 showing the same serial number format and location.
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Old 10-15-21, 06:45 AM
  #462  
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Originally Posted by T-Mar View Post
Regardless, it's definitely a 1987 frame built in late February by Matsushita/National.
Thank you again for your continued help. Do you believe that this may be a quality tubing or hi-ten?
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Old 10-15-21, 08:33 AM
  #463  
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Originally Posted by Chuck M View Post
Thank you again for your continued help. Do you believe that this may be a quality tubing or hi-ten?
It's really hard to make a definitive statement, without additional photos or information. If we operate on the premise that the New 600EX is OEM, then I'd expect Tange No. 1 or No. 2. Also, the presence of the pump peg and brazed-on shift lever bosses during this period would typically suggest something better than hi-tensile steel, even if it's just seamed, butted CrMo. For me, the definitive characteristic in determing the tubing grade has always been the seat post diameter. Matsushita/National typically built with Tange tubing during this period, in which case I'd expect nothing smaller than a 26.6mm seat post for a CrMo tubeset.
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Old 10-15-21, 10:01 AM
  #464  
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Would dropouts also tell something about quality or would all dropouts be cast at that time so looking to see if not stamped wouldn't tell much?
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Old 10-15-21, 10:14 AM
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Thank you again. I like the bike but not enough to drive to Tulsa to look at it based on what I have seen of the head tube that looks suspicious. But Iím running the Tulsa Run in three weeks and if it is still hanging around I may see if I can look at it.

Also the pictures are bad but it looks like the rear wheel is damaged and that is another reason I havenít pursued it more.
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