Charles I. 1625-1649. AR Pound (119.6 g). 1642. Shrewsbury mint. 

CAROLUS D G MAG BRIT FRA ET HIB REX, King on horseback leftt, holding sword, plume behind, no groundline below.
EXVRGAT DEVS DISSIPENTVR INIMICI, Declaration: RELIG PROT LEG ANGL LIBER PAR between two lines, three plumes and mark of 
value above. 

Seaby 2917. 
Very rare.

Gemini I Auction Closed Jan 11-12, 2005. 
Freeman & Sear - Gemini I, Session 2 Lot: 565