These would be good for 6550 /Kt88's with a choke input , the where made for HP and you can get 200 ma out of them easy . They Also have 47.5 volt bias taps and four 6.3 volt windings so plenty of filament power if you want to regulate them for 6L6's .has 2 amp 5 volt winding for Rectifier tube .
$60.00 each will ship one or both in flate rate box in US .
12LBS each .
Mark