Nur jahan
No, it is not allowed for any living president to be on US bills or coins. You may see some companies issue a "commemorative" coin to honor a current president, but such coins are for collectors and are not legal tender.
When the Ming government failed to issue enough copper coins, counterfeiting became an issue.
When the Ming government failed to issue enough copper coins, counterfeiting became an issue.
Jahangir in 1613
Not in the U.S., but the Bahama Islands issue 15 cent coins, and Russia used to issue 15-kopeck coins
kushans
That is the Mint, part of the Executive Branch
Many countries issue (or used to issue) 1 cent and 2 cent coins. Please post a new question with the coins' country of origin and their dates.
British decimal general circulation coins that are still legal tender include - All years of issue from 1971 of the 1 New Penny and 1 Penny coins. All years of issue from 1971 of the 2 New Pence and 2 Pence coins. The smaller 18mm 5 Pence coins issued from 1990. The smaller 24.5mm 10 Pence coins issued from 1992. All years of issue from 1982 of the 20 Pence coins. The smaller 27.3mm 50 Pence coins issued from 1997. All years of issue from 1983 of the One Pound coins. All years of issue from 1997 of the Two Pound coins. The commemorative Two Pound coins (1986 to 1996) and Five Pound coins (Crown - from 1990 onwards) are considered to legal tender, but many tradespeople and businesses are reluctant to accept them. The Half New Penny and Half Penny coins were withdrawn and demonetised in 1984. The larger 23.6mm 5 New Pence and 5 Pence coins were withdrawn and demonetised in 1990. The larger 28.5mm 10 New Pence and 10 Pence coins were withdrawn and demonetised in 1993. The larger 30mm 50 New Pence and 50 Pence coins were withdrawn and demonetised in 1998.
Not Kushanas, It was Gupta's, who introduced Gold Coins in India..
US Mint statistics report 87,376,722 regular issue coins and 2,018 mint "Proof" coins. Unless uncirculated these coins are very common.
The US Mint did not issue any silver coins of any kind in 1980. If you have silver coins dated 1980, they are not US coins.