Dated my first historic artifact, that is. Well, maybe not the first, I’m fairly certain that I’ve done something similar with some odd objects or other in the past, but this one was actually recovered on an archaeological project — monitoring anyway — and, without the date actually being stamped on the thing, I have assigned a secure date for its manufacture. To wit:
It’s got a makers mark of an overlaid diamond and ‘O’ (see here) with a 20 to the left and a 2 to the right. It’s also got “Duraglas” stamped into the side. I found that this was an Owens-Illinois Glass Co. bottle and their Duraglass product was not produced until 1940. The 20 represents its Oakland CA plant — 20 had been used until 1940 for it Backinridge, PA plant also — and the ‘2′ represents 1942. . . .hmmmm. Something doesn’t make sense. Before 1940, the date digit was supposed to represent the last digit of the year — 0 for 1931, 1 for 1931, etc. — but after 1940 they either added a period to indicate 1940+ or two digits — 4. or 44 = 1944 — but this has no period, but if Duraglas wasn’t used until 1940. . . . .a quandary. Maybe I’m not as certain as I thought. Well, needs more study, I think. Seems to be a beer bottle as well, since I have read that the stipling it has was used in conjunction with the script ‘Duraglas’ for beer bottles. Well, at any rate, I was quite thrilled at at least begin to pin a date on something. Hopefully, I can resolve the discrepancies at some point.