(!!!!) (Best Pair 1966) CV378=GZ37 Mullard NOS 1966 (51-51/40 x 2 tubes) 1% matched
(!!!!) (Best Pair 1966) CV378=GZ37 Mullard NOS 1966 (51-51/40 x 2 tubes) 1% matched,GZ37 CV378 NOS Ring Getter Mullard UK Full Wave Rectifier Valve Tubes,GEC英國真空管GZ37/CV378/U52/NOS 可以堂普洱茶苑| Yahoo奇摩拍賣,Mullard GZ37,32KB