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Here ya go: “2CM030976”. Can’t find ANYTHING on this number stamped on the side of my engine. T140ES is also stamped above this number. I’m told the bike is a 1979 T140.


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That is not a T140 1979 number:
1979. HA11001 to KA24608
or Late 1979. XB24609 tp XB24790. Note: XB code used in error, should have been XA

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Okay.....So what the heck does this stamped engine serial number actually mean. “2CM030976”

2926646C-94D3-4967-8F75-345047CA7E99.jpeg

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could be a restamp from a state dmv .
could be a total fake of a stamp ... a total fake stamp will not show up on any stolen bike list .

if it has a title with that number
it does not matter if it's a real stamp , because the title will make it a legal stamp .
do you have a title ?

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The above number may be strange, but I have a photo of two others, 2CM 032050, and another that is stamped 0CM 030958,that are identical to it in stamp details.
Model stamped is "T140M." for the first one, and "T140ES" for the second.

I also have a note that states "From 031701 (zero prefix added) 10/10/81 thru 032213 Jan. 1, 1983, motorcycles for the U.S. market were pre-fixed with
the letters 'CM" with NO date code."

My opinion is your serial number is indeed legitimate. The stamps certainly are.

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Real yes, but not for a 1979.’ That was the question.

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Originally Posted by John Healy
That is not a T140 1979 number:
1979. HA11001 to KA24608
or Late 1979. XB24609 tp XB24790. Note: XB code used in error, should have been XA


To clarify John's post, my bike is PA and was made in November 78 as a 79 model.
The month letters cycle around 12 letters
https://www.classicbritishspares.com/pages/engine-and-frame-numbers

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Originally Posted by Irish Swede
The above number may be strange, but I have a photo of two others, 2CM 032050, and another that is stamped 0CM 030958,that are identical to it in stamp details.
Model stamped is "T140M." for the first one, and "T140ES" for the second.

I also have a note that states "From 031701 (zero prefix added) 10/10/81 thru 032213 Jan. 1, 1983, motorcycles for the U.S. market were pre-fixed with
the letters 'CM" with NO date code."


My opinion is your serial number is indeed legitimate. The stamps certainly are.

What is the source of that note, and how can you affix provenance to it?


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https://www.tomcc.org/Triumph/FrameNumbers

May be an 82 Meriden engine (or bike?)

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GPZ is quicker than me!

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No Sir, no title


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If Georgia is anything like Tennessee you'll only need a notarized bill of sale and a number which doesn't pop up as stolen to get a title. I only had to supply that and pictures of the bike and engine number when I bought a bike without title in Georgia and registered it in Tennessee.
What number is stamped on the frame?


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...anxiously awaiting a reply from @Irish Swede ...


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GrandPaul, The question was if the number is legitimate.

Certainly the STAMPS are, and the background logos have not been ground away.

As to where the "note" comes from: I have had it pasted in the book next to the two serial numbers I listed above for several years.

Believe it, or don't, if you wish, but as I remember it, the U.S, government wanted serial numbers to contain more digits, beginning about that time (1982)
so that is probably when I first saw that information.

I have no more to say on this matter.

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Originally Posted by Irish Swede
GrandPaul, The question was if the number is legitimate.

Certainly the STAMPS are, and the background logos have not been ground away.

As to where the "note" comes from: I have had it pasted in the book next to the two serial numbers I listed above for several years.

Believe it, or don't, if you wish, but as I remember it, the U.S, government wanted serial numbers to contain more digits, beginning about that time (1982)
so that is probably when I first saw that information.

I have no more to say on this matter.

Oh, okay. I thought you had a note from some authentication source (TOMCC or the like) that had issued an advisory note on the subject.

Your explanation sounds legit, and the fact that there are several of them, certainly adds credence...


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I can’t for the life of me find a photo of the bike ANYWHERE on the internet, and I’ve looked at ALOT! They all are different. I know mine has the European tank (4 gallon), low handlebars, spoked wheels, naked forks (no accordion things, can’t think of the word), electric start, and Veglia gauges. The bike is completely stock, with nothing added except the paint.

5F43B365-8DD8-412D-85E7-65F91B498C10.jpeg

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dpo , you've got Richard Gere's old motorcycle
Except I think this is an 81 , your engine , I think is an 82


another 81 http://moto.zombdrive.com/images250_/triumph-t-140-e-bonneville-1981-8.jpg

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I really believe the engine that’s in the frame is original. Cannot find ANY sign of a number on the frame gooseneck...

Last edited by DPO; 09/10/21 1:37 am.

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Originally Posted by DPO
I really believe the engine that’s in the frame is original. Cannot find ANY sign of a number on the frame gooseneck...

ive never seen an 81 or 82 that i remember and I certainly never seen one up close .
i think the number plate was riveted to the steering head gusset at left front of
tank .

if its been removed , not hard to do , all bets are off.
As to why someone would want to remove the frame numbers , i sure it was done accidentally .

[Linked Image from i0.wp.com]

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You are correct Sir, there ARE 3 rivet holes where the data plate once lived...


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