Watch List notes:

(g) France, First Empire, Napoleon Bonaparte (1804-14), 20-Francs, 1810-A, Paris, Cockerel motif (Gad 1025; F.511), toned, good very fine.
provenance
Spink Numismatic Circular, February 1967, no. 1078 - £12.10.0 (with ticket)
Estimate: £180 - £220