Watch List notes:

(g) France, Third Republic (1870-1940), gold 100-Francs, 1878-A, Paris (Le Franc 552.1; Gad 1137; Fb 590; KM 832), a better example of this scarce type, in PCGS holder, graded MS61.
PCGS Certification #36122211, , A reported mintage of only 12,814 pieces
Estimate: £1600 - £1800