Obverse:

EDWARDV[S R]EX ANGL Z FRANC. Facing bust in tressure of nine arches. Saltire stops.

Reverse:

[PO]SVI DEVM ADIVTOREM MEV, CIVITAS LONDON. Long cross pattée dividing the legend, with three pellets in each angle. 

Good fine, very rare. Only 11 other examples known, 4 of which are in museums. Same dies as our D1472 (Sold Apr 2022 - Listed £1,250).

See D. Greenhalgh 'The Galata Guide To Medieval Half Groats' pg 43, this coin unlisted.