Case for coin balance (equal-arm) with two weights by Pickett. Case for coin balance (equal-arm) with two weights by Pickett 1817
Coin balance (equal-arm) with two weights (sovereign and 1/2 sov.) c.1817, in case, by Pickett Coin balance (equal-arm) with two weights (sovereign and 1/2 sov.) c.1817 1817
