Antique Chinese Qing Dynasty Miniature Sword Jian Letter Opener 19th Century

This is an antique Chinese Qing dynasty letter opener from the late 19th century. It is designed as a miniature sword Jian, and the handle and scabbard are made of bone. Both sides of the bone have been scrimshaw engraved with bird and plant designs and mounted with brass fittings. The steel blade is straight, sturdy, and sharp, with a diamond-shaped cross-section. The maker's mark is stamped on the ricasso of the blade.
MEASUREMENTS: Overall length 14 cm (5.51 inches ).
CONDITION: shows age and use.