question about model and value of this Raphael bike

Hello , i dont know anything about cycles/bikes.This bike came to me from my grandfather.He bought this to his child.Bike came between 1976-1981.I searched web but couldnt find any information about bike's model.Only thing is ;That is Raphael Geminiani.
I need model name and possible price/value of this bike atm ?

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Thank You Very Much