This is 6" F/15(?) cassegrain. The tube is fiberglas pigmented white though kind of yellowed from age, has a heavy aluminum end ring in front and a plate at the rear that is set back 1/4" or so to allow cooling. The mirror is ground flat on the back, has a "PANCHRO" sticker with the date of "1-8-68" and there are two marks indicating "#1" written in pencil. The secondary is convex and also has two pencil marks indicating "#1". I have owned three other Cave mirrors and am familiar with the habit of inscribing them so I carefully examined the primary and secondary but found no other markings or inscriptions. There is a sticker on the focuser that has faded but still has part of the name "Cave Optical" and the Anaheim Street address in Long Beach. The scope is adjustible for EVERYTHING and I finally got it dialed in. Great images very much like an RV-6 I own.
This is a project for someone who collects and uses old scopes, especially Caves. I have the OTA and a Cave pier of the appropriate height. You will need to find the equatorial head, three pier legs and finder. I would like to get $700 and would split the cost of shipping in CONUS.