MADE IN SPAIN 20 GUAGE DOUBLE SHOTGUN

I HAVE RECENTLY PURCHASED AN 20 GUAGE DOUBLE BARREL SHOTGUN AND AM INQUIRING A YEAR THAT IT WAS BUILT, AND ALSO A VALUE IT IS 75 PERCENT, ON THE BARRELL IS MARKED ULYSSES MAGNUM, AND THE OTHER BARREL IS MARKED MADE IN SPAIN, BOTTOM OF ACTION IS MARKED PG2656S, ENGRAVED ON THE RECIEVER IS WHAT LOOKS LIKE A GROUSE OR POSSIBLY A GOOSE OR DUCK, SERIAL NUMBER IS MARKED PG2656S IF ANYONE HAS ANY INFORMATION OR WHERE I COULD GET INFORMATION IT WOULD BE APPRECIATED, MY E MAIL ADDRESS IS This e-mail address is being protected from spam bots, you need JavaScript enabled to view it THANKS.