Edward the Black Prince, BI Denier au lion, 19 mm, 0.98 g. La Rochelle mint. 

..PmO : SENIT.., leopard left, R below, all within tressure of arches.
..CEI AQITA.., short cross 

SCBC 8138 var (mint).

Very rare. 

With permission of cngcoins.com, Jan. 2015.