The gun appears to be an Anschutz import, either from Spain to Germany, or, a country in Europe that was served by Anschutz. Anschutz also imported Berettas to Germany, back in the day.
As pointed out earlier, the sling swivels, sling, and the cheekpiece are hard evidence the gun was built to European ideas, and actually detract value here in the new world. Which, is not to say nobody here would be interested in a decent condition Spanish sidelock ejector. That appears to be a very good quality gun, it might have gold washed lock work, the internals might be gold plated to help avoid corrosion, typically an indicator of a higher quality gun.
Someone pointed out that you should go shoot it. Capital idea, I’d say, most people don’t have anything tangible to connect them to their great grandpa, especially something as nice as that.
Good luck.
Best,
Ted
