Obverse:

PILLELM REX. Crowned, facing bust with sceptre to right.

Reverse:

LIEFPOLD ON PINC. Cross pattée with annulet P A X S in angles.

About very fine and toned. Harvey dies Aa, with just 2 examples traced. 

For reference see:

M. Biddle, Y. Harvey (2012) 'The Winchester Mint and Coins and Related Finds from the Excavations of 1961-71' Winchester Studies 8, Oxford University Press, pg 408.