Obverse:

ELIZABETH D G ANG FR ET HI REGINA. Crowned intermediate bust 4B l. with rose behind.

Reverse:

POSVI DEV ADIVTOREM MEV. Square topped shield over long cross fourchee dividing the legend. Date above.

About very fine, the mintmark combination (bulbous/3 pointed) seemingly rare. 

Ex C. Comber Collection bt Baldwin 16 Oct 1981