Thanks everyone for your input and insights! It appears that some of the tubes are original and some are newer. I don't have anywhere to test them at the moment, but I will start cleaning it at least. I don't see anywhere that you could connect a phonograph, but I'm not sure how they connected them back then either. Maybe that black wire is a replacement for the original connection? Who knows. If anyone knows somewhere I can get tubes tested in the Reno, NV area, please let me know. Thanks again!
