Antique nickel plated brass sink drain ball trap with cleanout . It is marked FemCo on the side of the ball. The nickel plating is  worn, has scratches and oxidization and some tool marks and dents. The cleanout plug looks like it would need some tlc to be functional. It is water tight and does not leak. Overall good salvaged condition. Please look over the pictures and ask questions when needed. Thanks for looking

 Measures approx.-

8 7/8"tall x 3 1/4"diameter

 

Both inlet and out let 1 1/4" ID. (threads 1 1/2 OD)