Puckerings has dated this piece to the 1910s.

There is a full hallmark for Birmingham 1917 together with the makers initials H.Bs, I believe for Hardy Brothers.
Excellent condition, measuring 1 1/8" thick, a diameter measuring 1 5/8". Weight: 28 Grams / 0.90 Troy Ounces.
Item ID: 34630
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Puckerings has dated this piece to the 1910s.
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