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This is a scarce Anglo-Gallic billion silver niquet, of king Henry V (1413 - 1422).
H REX ANGL HERES FRANC, lis above crowned lion passant /
SIT NOME DNI BENEDICTV large cross pattee, trefoil in each angle, 'h' at centre
This coin was struck at the mint of Rouen during the Hundred Years War for use in English held territory in France.
CULTURE: Medieval France
MONARCH: Henry V
DATE: c. 1421 - 1422 A.D.
SIZE: 21mm dia
WEIGHT: 2 grams
ATTRIBUTION: Spink 8162