Picked this up today when I went to R5-D3 looking for some HV diodes for a friends SEM. A Harshaw Type 6C4 NaI(Tl) Scintillation crystal attached to a 6199 RCA PMT. I pulled the electrical tape loose and it looks good. The crystal is clear and the optical matching compound looks good. Later on I will tape it back up with come black camera tape.
Now I need to get a socket and resistor to make up a divider and I will have yet another thing I do not need!
-Jerry
Oh, paid $2.
IMG_2238 by macona, on Flickr