Here's what is shown at
www.numismaster.com:
KM#2 10 Centesimi 1875-1894 Copper Obv: Crowned arms within wreath Rev: Value, date
Country San Marino
Government Republic
Coinage Type Standard Coinage
Composition Copper
Weight 10 g
Diameter 30 mm
Description Obverse Crowned arms within wreath
Description Reverse Value, date
Legend Obverse REPUBBLICA DI S. MARINO
KM#13 10 Centesimi 1935-1938 Bronze Obv: Crowned pointed arms within wreath Rev: Value and date
Country San Marino
Government Republic
Coinage Type Standard Coinage
Mint Rome
Composition Bronze
Weight 5.3 g
Diameter 22.5 mm
Description Obverse Crowned pointed arms within wreath
Description Reverse Value and date
Is the coin in the image yours? Can you provide details on diameter and weight? I am no expert, but something in the picture doesn't look right (possible counterfeit)
Just because you can't see it ... doesn't mean it isn't there - Anon.
Former coin and banknote catalogue referee.