A rare Ottoman ivory-hilted dagger (jambiya) and scabbard, Turkey, circa 17th century

the slightly curved double-edged blade with faceted ivory hilt of waisted form, carved with a geometric design inlaid with brass studs, the top of the pommel with carved inscription enclosing a collared turquoise stone, the scabbard intricately carved with a geometric interlace on one side and a foliate arabesque on the other, replacement lower chape