Well, don’t know how to convince you, but there is no number on this lens. I know the lenses on my ‘39 have numbers that I have seen, so I am not unfamiliar with what to look for. The only reason I have this lens is it was on my car when I purchased it. I could see it was different than the right side lens. I found the numbers for correct lenses on the Forum, and confirmed the right side lens was correct. I was able to locate a correctly numbered left side lens and thus put this one for sale.
Regards, John V.