George III. 1760-1820. Brass weight for a half sovereign. 3.97 gm. 18.5 mm. Birmingham. W. Chambers Day (A Birmingham scale maker). A rose on a stem; STANDARD. W. CHAMBERS. DAY around / CURT WEIGHT around the top half; HALF SOVEREIGN | D G | 2 13 1/8 | 1842 in four lines. Withers 2270B. Choice Extremely Fine.