Silver, 27.3mm diameter, 11.3 grams. ROYAL EXCHANGE OPENED BY H: M: QUEEN VICTORIA  OCT: 28  1844  around her diademed head left, W.W. on truncation.  Rv. FIRST STONE LAID BY H· R· H· PRINCE ALBERT JAN.Y 17  1842  around three coats of arms over crossed oak and laurel branches, grasshopper above.  Eimer 1392, BHM 2186, WE 448.  Brilliant proof-like fields, matt bust, legend and coats of arms, slight scuffs in field, EF