This is FRENCH INDOCHINA 1941 S 20 CENTS NON-MAGNETIC, Marianne & Rice Plant km# 23a

Composition     Copper-nickel (75% Copper, 25% Nickel)
Weight     6.00 g
Diameter     24 mm
Thickness     1.75 mm
Shape     Round
Technique     Milled
Orientation     Coin alignment ↑↓
Demonetized     Yes
References     KM# 23a

YES WE DO COMBINE POSTAGE