[Amps] Testing 3CX1200Z7 tubes

[mike via Amps]

Can I test a 3CX1200Z7 tube in a Heathkit SB-220 amplifier? I have a 6.3 volt transformer I could use for the filament. The pin connections are the same. I could position a blower over the tube to supply the force air cooling. I have 2 tubes that are pulls from a local low power FM transmitter. They came from a Henry 1kw amp. I would like to check before I decide what to do with them. Thanks Mike