Charles I, 1625-49. Brass Coin Weight, For A Halfcrown, c.1620’s - 1640’s. Rare.
 
Obv: King on horseback left (similar to that depicted on an Halfcrown, armoured horse type). Rev: WITH / OVT : GRAYN / ES (without grains) above large CR and value of “2s 6d”.
 
This particular example shows the obverse design of the Halfcrown, depicting the equestrian portrait of King Charles, but wearing a helmet.
 
A nice old tone.