Bausch & Lomb shutter (Gar #lwcost item#1518xxx). CLA'd (5/15/25). On 2x3 Graphic board. The shutter works very nicely on all speeds ( T B 1 1/2 1/5 1/10 1/25 1/50 1/100 1/200 ). The front and back lens holes are approx ~26.6mm I.D. with a very fine thread.
