This antique G.T. Ladtler & Sons Baltimore Economic 5x8 8 1/2'' (215mm) brass waterhouse stop Rapid Rectilinear lens has a 44mm rear thread. There are a few scuffs, scratches, and discoloration on the exterior of the barrel. There is separation around the outer edge of the front element grouping. Lens is free of any fungus or haze.
