Excellent Dug Goodyear's 1851 Patent Hard Rubber Syringe

Sweet dug, pre-Civil War, maker marked black hard rubber medical syringe. It has no damage and the top piece even screws off revealing a complete plunger. It has a depressed GOODYEAR'S PATENT MAY 6 1851 maker mark. This syringe measures 4 5/8" with the plunger fully depressed and 7" with the plunger in the out position. $55