I have a o/u that has me wondering where it was built. The rifle say's " animo-express-eibar " on the top barrel.I belive the s/n is 94970 because it is on both the barrels and breech. There are stamps also. Has anyone ever seen one of these? It dosent seem to be a bad shooter, there is no selector switch for the barrels and is a recoilcock, any info at all would be appriceated.