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Tubing Mark ID

Old 04-10-20, 12:26 PM
  #1  
juvela
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Tubing Mark ID

-----

This tubing mark on the right chainstay of an unidentifed British machine which looks to date from the late 1940's is a new one for me.

A letter B can be clearly read inside an elongated diamond symbol. As I enlarged the image I kept hoping the B would become a P for an A&P mark but such was not the case...

Will be a slam dunk for our experts!

Mark is immediately above the drewed gear hanger in this image -




Thanks for looking.

[machine not in me possession]

-----
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Old 04-10-20, 01:59 PM
  #2  
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I think you are imagining things

Seriously, I zoomed in on that photo and I just see crustiness. That's not a tubing marking.

DD
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Old 04-10-20, 02:05 PM
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@juvela did you post the wrong pic?
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Old 04-10-20, 02:45 PM
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-----

it is there, clear as day

one needs to open the image to view it


-----

Last edited by juvela; 04-10-20 at 02:49 PM. Reason: addition
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Old 04-10-20, 06:04 PM
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The diamond looks more like a scratch to me. If, if that is a stamping, it looks like an 8 to me.
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Old 04-10-20, 06:16 PM
  #6  
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-----

the diamond is quite well defined

only the right portion of it is visible

its right end is rounded

-----
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Old 04-10-20, 06:32 PM
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Originally Posted by juvela View Post
-----

the diamond is quite well defined

only the right portion of it is visible

its right end is rounded

-----
Are you seeing pictures that I'm not?
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Old 04-10-20, 06:59 PM
  #8  
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J,
There is way too much corrosion for me to make more than the line out in the photo. And why is the line darker than the other paint around it? Just my observation. MH
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Old 04-10-20, 07:34 PM
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The reason that some may not see it is that they are looking on the dropout above the newer style derailleur hanger. As juvela stated in his original post it is on the chainstay above the drewed old-style stay-mounted hanger. It's quite small and half in the green paint and half in the crud below.
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Old 04-10-20, 07:34 PM
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can somebody circle the area that has this mark? I am not seeing anything on the chainstay that looks like a stamp
Oh NVM I see this supposed stamp now and I'd bet money it's nothing but a scratch. Sure it looks like someting much more than a scratch but....I have a miracle tortilla with the face of Christ I will gladly sell you!

Last edited by unworthy1; 04-10-20 at 07:39 PM.
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Old 04-10-20, 07:42 PM
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Found it, no way to circle the area though. No ideas either about what it is supposed to represent. Center of hanger, circular scrape in the paint directly above center, triangle and top of the "B" or possibly a "5"/"6" is between the scrape and hanger.

And, I believe there is also a "28" just to the right of the Drewed hanger, in the long bare area/scrape.
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Old 04-10-20, 08:16 PM
  #12  
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Enlarged to show texture....



I see a single diagonal line, what might be the "northeast" edge of a diamond shape. And something resembling an alphanumeric below and to the left of the line. But where is the "northwest" edge? It doesn't look like the paint is so uneven that it would fill the "northwest" edge but leave such a crisp "northeast" edge.

Also seems like an odd place to strike such a mark, but :shrug:
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Old 04-10-20, 08:36 PM
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-----

slightly surprised some readers having difficulty seeing it

am elderly with failing eyesight and must use strong reading glasses

figured that if I could see it everyone could do so easily

"should be simple for all the young whipper-snappers out there"

if the character is an eight rather than a letter B it brings up the possibility of Vitus 888 by Ateliers de la Rive but do not know if that tubeset goes back this far...

the left side of the character looks pretty straight to me, as opposed to the right side

the depth and width of the line forming the NE quadrant of the diamond appears too constant and even for it to be a scratch, at least to my eye...

thanks to all for looking
-----

Last edited by juvela; 04-10-20 at 08:38 PM. Reason: spellin'
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Old 04-10-20, 08:39 PM
  #14  
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Originally Posted by madpogue View Post
Enlarged to show texture....



I see a single diagonal line, what might be the "northeast" edge of a diamond shape. And something resembling an alphanumeric below and to the left of the line. But where is the "northwest" edge? It doesn't look like the paint is so uneven that it would fill the "northwest" edge but leave such a crisp "northeast" edge.

Also seems like an odd place to strike such a mark, but :shrug:
This is exactly what I saw when I enlarged it. The cracking of the paint and the crud give it the impression of a stamping, but up close it's obviously not. Just calling it as I see it with my own peepers.

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Old 04-11-20, 12:20 AM
  #15  
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I see it. I would guess itís just for marking the placement of that gear hanger. Perhaps It means something like <Braze here>. Could the diamond really be arrows saying to braze at the ends When the B is centered on the cutout? Just a guess, of course Iím an expert on nothing.

Last edited by Pcampeau; 04-11-20 at 12:26 AM.
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Old 04-11-20, 12:28 AM
  #16  
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I agree. I see the marks in question, but what I see is on the surface of the paint, not under it. If you stripped the paint, I think the mark would be gone too.
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Old 04-11-20, 06:00 AM
  #17  
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I'm not convinced that these are impressions in the chain stay itself. As stated, given the condition of the finish, it certainly wouldn't hurt to remove a little paint in the subject area, to provide a definitive answer.
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Old 04-11-20, 06:31 AM
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I think it says “Paul is dead” if read backwards.
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Old 04-11-20, 06:37 AM
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It looks enough like ratted up paint to me that I had to check the date of the OP to make sure that this wasn't originally posted 9 days ago.
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Old 04-11-20, 09:10 AM
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Tube maker marks are usually at the other end.
more likely a mark for the type of derailleur mount. There were a number of brands and types of mounts back then.
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Old 04-11-20, 07:26 PM
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To me the triangle portion looks stamped in, or rolled on, and the letter "B" (or a numeral "8", my best guess,) appears raised. Look long enough and it appears a "T" is below the "B" also.

Dammit, I never did any drugs and now I'm having hallucinations/flashbacks.

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Old 04-11-20, 07:46 PM
  #22  
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wire-brush this sucker and show us if there's really anything stamped there.
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Old 04-11-20, 07:52 PM
  #23  
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Originally Posted by T-Mar View Post
I'm not convinced that these are impressions in the chain stay itself. As stated, given the condition of the finish, it certainly wouldn't hurt to remove a little paint in the subject area, to provide a definitive answer.
Originally Posted by unworthy1 View Post
wire-brush this sucker and show us if there's really anything stamped there.
juvela said he didn't have it in his possession.

I've figured It out, same guy that did the Shroud of Turin is the frame's builder/tubing manufacturer

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Old 04-11-20, 08:15 PM
  #24  
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The marking is raised, not stamped/engraved as some have pointed out, the scratch distracts from the mark almost completely.
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