Precise information on old razors is pretty hit and miss. Normally the best you can hope for is an approximated date of give or take a decade. You may not find a definitive answer to your question.
Bob
that's what I started out thinking, and then I was proven wrong LOL. I have just read random post that sparked an interest and people know some stuff I asked them where they got that information and somebody would tell me they died 15 years ago LOL
I pretty much figure that it is hit and miss, I was just hoping one of those people that just has some random knowledge stored in their head would just say, oh yeah, the last time they used the IXL 1850 stamp was in 1867 LOL or 1972. I'm still hopeful somebody will actually no. I've learned a lot of other stuff trying to find out LOL
somebody somewhere posted a picture of all of the stamps out of some registry or something? I wish I knew where that book was at