Today I also picked up this cool silvered C-5 tube (2nd picture). No idea what that is (can't find anything on it on the net), but it looks cool.
Yesterday, my father-in-law brought over an old radio from one of his friends. It was in sad shape, but it did yield (among other things) a set of two #45 tubes (3rd picture). These are coveted by audiophiles and generally go for big bucks on eBay.