Question: what proof sets are most valuable?
Answer: 1,979 Proof Set - Type 2. [00:43], 1,970 Proof Set - Small Date. [01:23], Pre-1,956 Proof Sets. [02:06], #9:2,012 Proof Sets. [02:42], #8: 1,981 Proof Set - Type 2. [03:25], 1,996 Prestige Proof Set. [03:42], 1,983 Proof Set - No S. [04:17], 1,968 Proof Set - Nos. [05:46]