What is the value of 1981 US coin proof set?

Answer 1

The 1981 Proof set has a current value of $9.00 and issue price was $11.00 but check the "S" mint mark on all the coins, on most of the sets the mint mark is filled an does not appear well defined. If all coins have a sharp clear mint mark, value may be $300.00 or so.

Answer 2

The 1981 Proof set has a current value of $8.00. The issue price was $11.00. Check the "S" mintmark on all the coins, on most of the sets the mintmark is filled an does not appear well defined. If all coins have a sharp clear mintmark, value may be $300.00 or more.