02-04-2011, 11:57 AM
Indeed.. just pre war.. the CT series valves were generally only used on sets destined for the continental market.. never sort of caught on here.. Only one I have ever seen was in a Mullard set where it sat along with a standard set of E series.. a lone CCH2? puzzling. http://www.radiomuseum.org/tubes/tube_cch2.html






