A Vintage Set Of Three Sterling Silver Duck Figures Statue London 1977 Excellent condition. The two larger ducks are hallmarked on the back with the London import mark, 925 and the date mark "c" for 1977 as well as the makers mark "J S & M J" on the side of the head and 925 again on the base, the smallest one is marked with just "925" due to its size. The largest one measures approx 2.2 cm in length, the middle one measures approx 1.9 cm in length and the smallest approx 1.2 cm in length. They weigh 22.9 grams in total.