US M1840 cavalry sword by K & Co [KIRSCHBAUM, SOLINGEN] . Ricasso is maker-marked and stamped IRON PROOF. Guard is stamped 250, so is the scabbard drag. Blade is standard 35", plated, with some minor rust spots, otherwise bright and corrosion-free. Scabbard has superficial rust all over. Grip leather is long-gone. These were imported in quantity by both the North and the South.