A Turkish silver-mounted miquelet-lock gun, second quarter of the 19th Century with octagonal etc

A Turkish silver-mounted miquelet-lock gun, second quarter of the 19th Century with octagonal etched twist barrel stamped with a gold-lined barrelsmith's mark, encrusted with gold scrollwork behind the muzzle and ahead of the breech, and retained by five engraved silver bands (the forward two replaced), iron lock encrusted with small gold and silver patterns, brass bud-shaped trigger, figured hardwood full stock, two-stage faceted butt, the stock profusely inlaid with silver plaques finely pierced and engraved with scrolling foliage, overlaid with an engraved silver plaque over the barrel tang, the comb of the butt applied with a further plaque (extensively chipped), and retaining an early sling belt (fore-end cap missing, ramrod replaced) 93.3cm; 36.75in barrel