Darkside coin compositions help

Numismatics

Anyone knows the compositions for the following coins?

1. Netherland 1966 1/10G
2. Netherland 1967 1/4G
3. Portugal 1928 50Centavos


TY

lordmarcovan

1: KM#3, .640 silver/.0288 oz.
2: KM#4, .640 silver/.0736 oz.
3: KM#577, copper-nickel.

Numismatics

Thank you LordM.