Can any one shed some light on this lens in cell? This is an F5.5 4''(100mm) doublet achromatic lens of around 22''(558mm) uncoated and air spaced. The three? spacers are missing,unless it was meant to be a hard contact which i doubt.
The lens cell is aluminium,the paint is a dark khaki military green with a very fine stipple surface. My sense is that it is probably
military surplus but i would like to know more about it. I hope some one can help.