Great razor. Case straight razors are known to be of high quality. I have found some information on them in my Razor Anthology book but it doesn't give much about dating. Don't quote me on this but I think I also found some information on them in my Knives & Razors book by Jim Sargent. I'll have to look in them but I want to think I found a lot more information on Case somewhere's. I have a couple of Case straight razors & they are excellent.