What is a UK 1937 three pence worth?

Answer 1

Great Britain produced three different Three Pence coins in 1937, although only two of them were intended for circulation.

The most common (KM#849) is made of nickel brass, is 12-sided, roughly the size of a US nickel coin (but about twice as thick), and weighs 6.8 grams. The front bears a portrait of King George the Sixth and the words "GEORGIVS VI D:G:BR:OMN:REX F:D:IND:IMP:" (abbreviated Latin for "George the Sixth, By the Grace of God, King of All Britain, Defender of the Faith, and Emperor of India"). The back has an image of a thrift plant with three blooms, the words "THREE PENCE" above, and "1937" below. 45,708,000 were produced for circulation in 1937, as well as 26,000 in Proof for collectors. According to the Standard Catalog of World Coins, and example is valued at US$0.25 in Fine condition, US$0.40 in Very Fine condition, US$2.00 in Extremely Fine condition, US$10.00 in Uncirculated condition, and US$17.50 in Proof.

A three pence coin in silver was also produced for circulation (KM#848). It is 16mm in diameter, weighs 1.4138 grams, and is 50% silver, giving it an ASW (Actual Silver Weight) of 0.0227 troy ounces. The front bears a portrait of King George the Sixth and the words "GEORGIVS VI D:G:BR:OMN:REX" (abbreviated Latin for "George the Sixth, By the Grace of God, King of All Britain"). The back has an image of the St. George Sheild (which has a cross on it) on a Tudor rose, with "19" to the left, "37" to the right, "FID:DEF:IND:IMP" above (abbreviated Latin for "Defender of the Faith, and Emperor of India"), and "THREE PENCE" below. 8,148,000 were produced for circulation in 1937, as well as 26,000 in Proof for collectors. An example is valued at US$0.50 in Very Fine condition, US$1.25 in Extremely Fine condition, US$7.00 in Uncirculated condition, and US$15.00 in Proof.

Finally, 1,351 silver coins were produced in Prooflike condition as Maunday Money to be given out by the King around Easter (KM#850). While the same size and weight as KM#848 above, the coin looks different. The front bears a portrait of King George the Sixth and the words "GEORGIVS VI D:G:BR:OMN:REX F:D:IND:IMP:" (abbreviated Latin for "George the Sixth, By the Grace of God, King of All Britain, Defender of the Faith, and Emperor of India"). The back has a large "3" dividing the "19" and "37" of the date, with a large crown above the numeral and an oak wreath surrounding it. An example is valued at US$45.00 in Uncirculated condition, and US$55.00 in Brilliant Uncirculated condition.

Answer 2

A few pence if in circulated condition or a pound or two if uncirculated. The brass threepenny bits of Elizabeth II aren't particularly rare or desirable.