[TR] TR4A stamped B 5 What's it mean?

[Randy and Valerie DeRuiter]

If its like the TR3 frames I've seen I think its just a version number for the
frame. Randy
> To: triumphs at autox.team.net
> Date: Sat, 30 Jun 2012 21:26:49 -0600
> Subject: [TR] TR4A stamped B 5  What's it mean
>
> Any idea what the B 5 means that is stamped on the front cross beam of
> my TR4A frame?
>
> I dug out the straight frame I have for the Wreck listed below and saw
> a number stamped on the top of the frame cross member.
>
> http://s1162.photobucket.com/albums/q532/levi3451/