Gents, I have 1, NOS, Bliley Crystal holder, #CM2. No crystal, just the holder. It measures, ~1-7/8" diameter, ~11/16" thick (case only), and has 2 pins on the bottom spaced at 3/4". Pin diameter are ~3/32a and ~1/2" long. Nice!! Photo avail. $5 + actual shipping...cheapest way. 73, Charlie, N0TT