Studio camera by Charles G Collins, St John's Wood, 1870-1889. Sliding body camera for 6 1/2 x 8 1/2 inch plates. The lens panel slides into back. RAck and pinion focusing over approx 20cm, exposed rack on basebaord. Vertical swing repeating back. Ground glass focusing screen hinges downwards. Fitted with a single wooden darkslide. With DAllmeyer 3D lens cat no.0657. Charles G. Collins.