Vintage Silver Hunting Horn Brooch Scottish Celtic Themed

Vintage or possibly antique Scottish Celtic themed hunting horn brooch, with a triskele form to the wider end, a targe with bosses and a worn central triskele and a Celtic Knot design as the mouthpiece, just over 2 inches long. Deeply stamped to the reverse with "silver" and tests fine as sterling silver. It is a solid casting and weighs 17 gram. Age: It could be Victorian or it could be as late as 1950s, taking into account construction and wear I would think 1920s would be a reasonable estimate for age. Cleaned but not polished.