Weird Block #'s

[Wuudie]

Is this from a Car?

*43-7-83*

 

[pat in Santa Cruz]

Yes, the 6 is the later style. The number indicates Feb '31, but the J.S. states the change was in March '31. Your block is probably from the change over period.

 

[Wuudie]

another two hours of cleaning with break cleaner and other solvents, I concur they are both 6-
Not sure what you mean by change over

 

[pat in Santa Cruz]

another two hours of cleaning with break cleaner and other solvents, I concur they are both 6-
Not sure what you mean by change over

In March 31 ( according to the Judging Stds) the 6 was changed from one with a rounded top to one with a straight leg like the one on your serial number. The Judging Stds are full of interesting trivia like this.