Welcome. That isn’t what most folks consider an antique gun.
There is a member here, “Kyrie” who is quite knowledgeable about Spanish guns and the gun trade in Spain. I’m hoping he will show up to provide some insight on your new gun. In the description, there is wording that describes a “cheek rise” but, no photo of the wood on the left side. I presume this refers to a cheek piece, popular on European spec guns at that time, along with the sling swivels and the leather sling. A photo of that side of the stock, along with the flats of the barrels, and the markings on the barrels would help a lot.
Best of luck. I will speculate that it is worth more than a bottle of wild turkey at this juncture in time.
Best,
Ted
