The soldier isn't at all familiar to me. The lettering on the barrels is still fuzzy, but I think probably a letter got omitted and it should read "Qualite Superieure"--superior quality. Maybe Pierre had one too many glasses of wine at lunch.

Raimey, Kennett published a series of articles on proof in Gun Digest, basically updating Baron Engelhardt's earlier work. The one on French proof comes from Gun Digest, 1970.