Proving Pieces, The Mint, Birmingham, checks (3), in copper and nickel, arms of Birmingham, the mint birmingham around, six-pointed star punctuation, revs. ralph heaton & sons coiners around to the english and foreign governments, six-pointed star punctuation, edges plain, 31 and 25mm, 9.81g/12h, 4.99g/12h (Sweeny 18, 19); in copper, similar, but centre of rev. blank, 25mm, 5.08g/12h (Sweeny 20) [3]. First brilliant mint state, second extremely fine, last very fine
£80-100

First only illustrated