The "S" mintmark denotes this coin as a Proof coin. Unless it has been handled correctly it's only one cent. The Mint does not sell single one cent proof coins.
If the coin is still in collectible condition, the value is about $2.00.
1929 Wheat Penny; With no mint mark, in good condition is worth $0.15, uncirculated is worth $13.00. With D mint mark, in good condition is worth $0.15, uncirculated is worth $32.00. With S mint mark, in good condition is worth $0.15, uncirculated is worth $18.00. More specifics are at the Related Link
1 cent if circulted 5 cents if uncirculated
a penny
According to a 2014 coin price chart, there is no wheat penny that is worth $12,500. There is, however, a 1922 (no mint mark) wheat penny worth about $500 in circulated condition and $20,000 in mint condition. The highest price penny like this is a 1944 Steel penny that is worth $100,000 in mint condition and $4,000 in circulated condition.
Regardless of the date, maybe $1.00 if you find someone that wants it, this is a novelty coin not made by the US Mint and has no collectible value.
1930 Wheat penny: with no mint mark, in good condition is worth $0.10, uncirculated is worth $10.00. With D mint mark, in good condition is worth $0.15, uncirculated is worth 25.00. With S mint mark, in good condition is worth $0.15, uncirculated is worth $13.00.
1936 Wheat Penny: With no mint mark, in very good condition is worth $0.10, uncirculated is worth $5.00, proof is worth $135.00. With D mint mark, in very good condition is worth $0.10, uncirculated is worth $8.00. With S mint mark, in very good condition is worth $0.10, uncirculated is worth $8.00.
1929 Wheat Penny; With no mint mark, in good condition is worth $0.15, uncirculated is worth $13.00. With D mint mark, in good condition is worth $0.15, uncirculated is worth $32.00. With S mint mark, in good condition is worth $0.15, uncirculated is worth $18.00. More specifics are at the Related Link
1929 Wheat Penny; With no mint mark, in good condition is worth $0.15, uncirculated is worth $13.00. With D mint mark, in good condition is worth $0.15, uncirculated is worth $32.00. With S mint mark, in good condition is worth $0.15, uncirculated is worth $18.00. More specifics are at the Related Link
1950 Wheat Penny; With no mint mark, in very fine condition is worth $0.10, uncirculated is worth $1.50, proof is worth $45.00. With D mint mark, in very fine condition is worth $0.10, uncirculated is worth $1.00. With S mint mark, in very fine condition is worth $0.10, uncirculated is worth $1.25.
1951 Wheat penny: With no mint mark, in very fine condition is worth $0.10, uncirculated is worth $1.50, proof is worth $35.00. With D mint mark, in very fine condition is worth $0.10, uncirculated is worth $0.60. With S mint mark, in very fine condition is worth $0.10, uncirculated is worth $2.00.
2-3 cents.
1939 Lincoln, Wheat Ears Reverse (Wheat Penny): With no mint mark, in very good condition is worth $0.05, uncirculated is worth $3.00, proof is worth $35.00. With D mint mark, in very good condition is worth $0.45, uncirculated is worth $11.00. With S mint mark, in very good condition is worth $0.15, uncirculated is worth $8.00.
1924 Lincoln Wheat Penny: With no mint mark, in good condition is worth $0.15, in fine condition is worth $0.35, uncirculated is worth $40.00. With D mint mark, in good condition is worth $8.00, in fine condition is worth $12.00, uncirculated is worth $350.00. With S mint mark, in good condition is worth $0.75, in fine condition is worth $1.50, uncirculated is worth $185.00.
A 1910 penny: With no mint mark, good condition is worth $0.20, fine condition is worth $0.45, uncirculated is worth $14.00, Matte proof is worth $22.50. With S mint mark, good condition is worth $6.00, fine condition is worth $8.00, uncirculated is worth $85.00.
A U.S. 1965 cent (not penny) was minted without a mint mark. It is a common coin. A 1965 Great Britain penny is worth 10 cents if uncirculated.
1917 Wheat Penny: With no mint mark, in good condition is worth $0.20, uncirculated is worth $25.00. With D mint mark, in good condition is worth $0.25, uncirculated is worth $110.00. With S mint mark, in good condition is worth $0.40, uncirculated is worth $125.00.