From:Don Biter
Subject:RE: What Do I Have (3) Date:Sun Aug 12 13:18:27 2012
Response to:17670

I could be wrong, but it looks like I 7, That would indicate the frame was made Sept. of 57'. The original frame may have been damaged in its first year of life and needed to be replaced. When I was young I nearly destroyed a new bike the first year I had it, so this makes sense to me. The wheels may have been changed in the same incident that damaged the frame. I would think used 19" wheels would have been readily avialable at the time, so that would explain that also. This is what made the Hummers and the ST's so practical, all the major parts interchanged. As far as I can tell, my 56 ST has parts from five different Years. It was rode hard and put up wet its entire life. Hope this helps. Good luck.
OK - so if I understand, the first picture with the "1 and L" indicate that my frame is from December of 1951. The frame has teleglide forks and 19" wheels.

The second picture, "47 54-53" is just a casting number, right?

The third picture (the engine SN) indicates that the engine is a 1956 ST.

So the question is, what should I do?

It doesn't look like the 165 was produced until 1953, so if I use my engine, I need to get a 1956 frame and 18" wheels, assuming I am going to restore this one 'correctly'.

Any opinions would be appreciated