Mayfield pocket camera. Folding hand camera in polished ebonite for plates 3 1/4 x 3 1/4 inches. f/8-64 lens, RR type. Rotary shutter with speed adjustment. Ground glass focusing screen. c. 1888. Manufactured by Mayfield, Cobb and Co., Ltd., 41-35 Victoria Street, London. With fitting for flash. Mayfield's Pocket Camera