Silly me, I thought I would just step over to my CTC-11 and borrow its crystal, but of course that's conveniently mounted
under the chassis.
In the shop I found a board from a junked 1980s TV with a crystal. If I can unsolder that and add little leg extensions without burning it up, maybe that will do for a substitution test.
Say that I wanted to go nuts and buy a new one -- where to look? A quick romp through Digi-Key and Allied didn't turn up much. I don't care if it looks exactly like this one, as long as it has two legs that I can solder prongs onto somehow.
Phil