Very large, heavy steel padlock with Star, no key

2 1/2+ pounds of heavy steel in this old padlock. Case has large star, PO, and 2 embossed in face of case. Reverse side has a deep recession. Condition is very good. Shackle is in locked position and mobile. No rattles. 3 1/2 x 5 1/2 inches x 7/8 inch thick.