They are both chefs, the smaller one would be a no as it is quite worn. The longer one is in better nick, if it is of interest to you I can pm the details of the antique place.
Sheffield, indeed. Sabs from that time had a rat-tail tang. Full tang has become popular in France only after WW2. The old Sheffields I've seen were all made from an excellent steel, a bit harder than the best French ones.