Hey Silvereagle,
My 2010 World coin catalog says the coins you have, in average "circulated" condition , or "VF" condition are:
1937 10 Franc $125, because of a low 52,000 mintage.
1936 20 Franc $300, because of a low 48,000 mintage.
Interestingly, 1936 10 Franc wasn't minted at all (zero mintage) and the 1939 20 Franc coin had a mintage of only 3,618! 1939 20 Franc in VF condition; $2,000
Send and email and I'll send a pdf of my old catalog.
S~P