Signature: [engraved above each keyhole]: Biennais
Marking: [1] B surmounted by crouching monkey, pellet each side, within lozenge (maker's mark)
[2] classical head, letter P in oval (standard mark, 1793–94)
[3] cock and numeral 1 in octagon (Paris mark for 1st standard silver,1809–19)
[4] helmeted head in circle (Paris medium excise mark for silver, 1809–19)
Location of marks:
[on one wing of each winged disk]: [1], [3], [4]
[on other wing of each winged disk]: [2]
