khouse
Forum Supporter
It looks like you came across some very nice coins. I don't know why these coins in question are 1958 mint? I don't see anything in the composition to make it any different?Sorry to bump an old thread but I found a few of these pennies today and am now very curious. I hope these pictures help someone identify what these coins are. I got 2000 "unsearched" wheat pennies from Ebay. I found 3 1958-D's just like the pics in these bags. Maybe it's coated but I find it odd several people have reported 58-D's like this around here. Also odd that all 3 of the ones I found in the same batch were that year and mint. Details are great and the coins are in excellent shape as shown in the picture..
Years Material Mass (grams)
1793–1796 100% copper 13.48
1796–1857 100% copper 10.89
1856–1864 88% copper, 12% nickel (also known as NS-12) 4.67
1864–1942 bronze (95% copper, 5% tin and zinc) 3.11
1943 zinc-coated steel (also known as 1943 steel cent) 2.67
1944–1946 brass (95% copper, 5% zinc) 3.11
1946–1962 bronze (95% copper, 5% tin and zinc)
1962–1981 brass (95% copper, 5% zinc)
1982 varies: brass (95% copper, 5% zinc) or copper-plated zinc (97.5% zinc, 2.5% copper)[6] 3.11 or 2.5
1983–present 97.5% zinc, 2.5% copper (core: 99.2% zinc, 0.8% copper; plating: pure copper)[7] 2.5