Eric, Please dont release the vacume from that tube. Even though it may not be the popular round 40s variety it is still a 50 year old vital part that they just dont make any more. Now the big buck 40s collectors may not give a rats *** about these but as time moves on the 50s and even 60s sets will be more and more collectable and valueable. I know space is an issue with most folks. I cant keep every CRT I come across. I am lucky enough to know a "big buck" guy who seems to apreciate later than 1950 stuff. He comes and loads up his van one or twice a year. Sometimes trade, sometimes free. Keep the hobby alive. Pass it on....
Greg