TUBE 25Z6GT TRONAL NOS Tested good métrix U61C EUR 8,00 - PicClick FR
1) Each RCA 25Z6GT & JAN-CRC-25Z6GT Rectifier Tubes NOS TESTED! Radio Hi Fi | eBay
RCA 25Z6GT
4 US-Made 25Z6 25Z6GT Vacuum Tubes Valves NOS NIB Lot Of Four - Etsy Schweiz
NOS NIB Matched Pair RCA USA 25Z6GT Black Plate [] Get Vacuum Tubes 100% - VIVA TUBES
File:Vintage Western Electric Model 100F Table Loud Speaker Set, 3 Vacuum Tubes (6SL7GT 25L6GT 25Z6GT), Made In USA, Circa 1938 (32688980782).jpg - Wikimedia Commons