UNMARKED ANTIQUE BRASS, WATERHOUSE SLOT LARGE FORMAT LENS

The lens is in good condition. The barrel shows moderate signs of prior use. The rear and front element are in good condition. No cleaning marks, no haze, no fungus, no separation, no scratches on or in between the elements. No dust particles in between the elements. Has no aperture, but a Waterhouse stop slot. Comes with flange. Both flange and lens threads seen their best days, show wear and bit hard to get on straight. Lens is 47mm tall with hood. Diameter of front element is 23mm. Lens comes in focus at infinity full open aperture at approx 135mm. Covers  5x7 with hardly any room to spare. 4x5 would be better. Lens comes with cap.