[Elrick]

Hello, I'm newly registered but have been through many posts and other sites but I need some help from the experts. I'm working on getting my Great grandmothers' Philco 41-280 back up and running. My question is regarding the tube identification. There are two Audio Out tubes marked 41. Anyone know a cross reference identification number for these tubes. The only tube tester I've located in my town doesn't even accept this socket and they couln't provide me with a alternate tube ID in theircode booklet. I do know that Philco 84 tube in this set is also known as 6Z4. Thanks in advance and I'm sure to be around asking for advice as things proceed.