Do you have a picture of this "Mystery" wringer? Haha. There were 3 basic models. N2L, J2L, and E2L. The N2L is the round tub, the J2l is the square tub with a removable lid, and the E2L in the square tub with the HINGED lid. Essentially all Maytag wringer washer agitators are interchangeable...