12ga. O/U

I would like to know the value of a superposed 12 ga. single non-selective trigger,3" Mag. chromed bores,vent rib,28"barrels. The barrel flats(at receiver) are marked "Safari Arms Ltd - Toronto,
Investarm Made in Italy. The stock(I think it's European walnut) is
extremely well finished. Can you tell me anything about this shotgun?
What is it worth? Thanks, Larry.