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12AZ7A GE Zenith gray plates NOS "U" getter halo 1960 (15ma/9.6ma)
12AZ7A RCA black plates NOS 1975 (7.6/9.2ma)
12AZ7A RCA branded Zenith black plates "D" getter NOS 1966 (8.0/8.8ma)
12B4A RCA NOS 1960's (31.5ma)
12B4A Sylvania NOS 1960's (33ma)
12BV7=12BY7A Tungsol NOS 1960 era (35ma)
12BY7A Motorola by Sylvania NOS 1960's (21ma)
12BY7A RCA used/good 1960's (21ma)
12D4 GE NOS
12D4 GE NOS 1964 (52/40)
12D4 Philco by Sylvania used/tests like new 1959 (62/40)
12D4 Raytheon used/good 1960's (46/40)
12D4 RCA NOS 1960's tilted glass (52/40)
12D4 WG Co. by Sylvania used/strong 1959 (53/40)
12DB5 US Brands NOS (6 in stock)
12DT8 RCA gray plates NOS 1970's (12.2/16.4ma)
12DT8 RCA gray plates NOS 1970's (12.6/14.0ma)
12DW7 Sylvania rebranded RCA tests like new 1961 era (1.0ma/11.2ma)
12HG7=12GN7 RCA Big Bottle NOS 1960's (44ma) (rare)
12HG7=12GN7 RCA clear top NOS 1970's (25ma)
