This is an extremely rare two-handed jian. I am not completely clear on the difference between a long handled chang jian, and a true shuang shou jian, but this one was clearly designed for two hands. The condition is not so great with a few cracks along the edge; nevertheless, I was excited to find such a thing due to its rarity.
The jian has a 71 cm blade and is 98 cm overall. The style is clearly Ming, but the patina indicates late 18th or early 19th c. The pommel is identical in style to those seen with Ming tomb figures, but perhaps a little smaller than the true Ming examples. Ming shuang shou jian are also reputed to have even longer blades.