San Francisco and West Point both supplemented Philadelphia's production of Lincoln cents and struck cents with no mint marks, to mimic Philadelphia's. I have seen several references online (including wikipedia) to the fact that West Point did this from 1973-1986. The most specific references to San Francisco (again we are talking about Lincoln cents struck for circulation without an S mint mark) was that it happened in the 1980's. This is what is given on the mint's own website "1980's." Does anyone know where that 1973-1986 reference is coming from? Did the mint ever actually disclose what years each branch supplemented production? If it's public knowledge, what years did San Francisco produce unmarked cents for circulation?
The information can be found by date and mintage in the Coin World Almanac. I'm at work right now and don't have access to my books. I'll try to get you the info tomorrow. I would also expect you could find the info in the annual mint reports for the years in which the mintages took place.
Eschew paper; achieve dhyana. Books!!! :desk: ¿Reports! That sounds like something using the archaic medium of paper. My neural operating system does not support that format.:rolling:
More help please Does anyone have these numbers please. It's for the children.[tears roll down face] Seriously, I work at a science museum for children and adults and I need this info to complete a display. It is about statistics and the probability of finding a cent of a given year in pocket change. (This info might even be helpful to our community.)
Ok, got the info. Sorry didn't get it sooner, I've been busy. There is no evidence that I can find that either the S or W mints struck circulation coinage before 1975. Cents 1975 (W) 1,577,294,142 coins 1976 (W) 1,540,695,000 1977 (W) 1,395,355,000 1978 (S) 291,700,000 1978 (W) 1,531,250,000 1979 (S) 751,725,000 1979 (W) 1,705,850,000 1980 (S) 1,184,590,000 1980 (W) 1,576,200,000 1981 (S) 880,440,000 1981 (W) 1,862,400,000 1982 (S) 1,587,245,000 I don't know composition. 1982 (W) 1,990,005,000 I don't know composition. 1983 (S) 180,765,000 1983 (W) 2,004,400,000 1984 (W) 2,06,215,000 1985 (W) 696,585,000 1986 (w) 400,000 Quarters 1976 (W) 376,000 1977 (W) 7,352,000 1978 (W) 20,800,000 1979 (W) 22,672,000 Of course since the Philadelphia mint made all of the dies that the S, W and Philadelphia mint used, there is no way to tell them apart.
I was wondering... Who made the blanks? I was wondering if somehow, some day, somewhere (qv Stephen Sondheim) there might be a way, at some vastly prohibitive expense, to do some mass spectrometry on the metal and infer something from that. (Is there a beard stroking smilie?)
I believe all the blanks were made in Philly and Denver until 1982. All the strip was rolled in Philly up until the early '70's if memory serves but I'm even less sure of this. The San Francisco mint also struck cents for circulation in the '65 to '67 era. They made all denominations according to the mint reports from this time but made only cents and nickels (with mm's) after 1967.
I didn't bother to list the San Francisco production for the 1965 - 67 era. I admit I didn't think that he was after that information. Like you said they did make all denominations in 1965 and 66, and all but half dollars in 67. All of the no mintmark 1967 half dollars were struck in Denver. I know the Philadelphia mint was still operating their foundry and rolling mills in 1976 (I visited it that summer.) They were definitely rolling cent and nickel stock but I don't know if they were rolling clad stock