How old are ELG shotguns?

ELG shotguns are typically associated with a proof mark used in Spain, indicating that the firearm has passed testing for safety and quality. The ELG mark dates back to the late 19th century, with its origins linked to the establishment of proof houses in the country. As such, shotguns bearing this mark can vary in age significantly, depending on when they were manufactured, but many ELG-marked shotguns are over a century old.