Went to a craft/antique fair with the better half today, no razors but I did find these and only paid $2 for them but would have paid more as it was interesting talking to the 86 year old man that sold them to me, he even told me his father shaved with Treet single edge blades. Anyway I did some googling and can’t quite come up with a date range on these particular Thins and I don’t really want to open them to see the date code, they make for a nice memory of a conversation with a stranger, plus shaving with vintage blades is not really my thing. Anybody know how old these are?