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12BV7=12BY7A Tungsol NOS 1960 era (35ma)
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)
12HG7=12GN7A Delta Gold Seal Toshiba Japan like new (37ma)
12HG7=12GN7A GE Japan NOS (1 pair in stock)
12HG7=12GN7A Magnavox by Hitachi Japan NOS (34ma)
12HG7=12GN7A RCA NOS (30ma)
12HG7=12GN7A Sylvania NOS (33ma)
12HG7=12GN7A Sylvania NOS (42ma)
