Marking: [1] J B C O, a bellows, in a vertical lozenge (maker's mark)
[2] Cock, flanked by A and 1, in vertical octagon (Paris mark for first standard silver, 1798-1809)
[3] Man's head flanked by 8 and 5 in an oval (Paris large excise mark, 1798-1809)
[4] Man's head, flanked by 8 and 5, inverted and reversed, in a circle (Paris medium excise mark, 1798-1908)
Location of marks:
[1] inside of cover, below lip of urn on band with rosette motifs, on central portion of bottom of lamp
[2] inside of cover, on neck, on side of square base, on central portion of bottom of lamp
[3] inside of cover, on rim of foot
[4] on central portion of bottom of lamp
