7N7 Philco by Sylvania chrome top "parallel black plates" used/good 1949 (8.4/8.0ma)
7N7 Sylvania branded GE chrome top used/good 1956 (6.0/6.2ma)
7N7 Sylvania branded RCA chrome top used/good 1956 (6.6/8.4ma)
7N7 Sylvania chrome top branded GE low hours/tests like new 1957 (7.4/11.4ma)
7N7 Sylvania chrome top used/good 1956 (6.5/7.0ma)
7Q7 Canada used/good 1950's (85/57)
7Q7 Delco by Sylvania used/good 1950's (90/57)
7Q7 GE NOS 1950's (4 in stock)
7Q7 National Union NOS (3 in stock)
7Q7 RCA NOS 1950's (4 in stock)
7Q7 Tungsol by Sylvania used/good 1950's (95/57)
7R7 Sylvania used good (59/38)
7R7 Tungsol NOS 1947-1948 (52/38)
7R7 US Brands NOS (4 in stock)
7S7=7J7 Mullard England NOS (4 in stock)
7S7=7J7 US Brands NOS (4 in stock)
7T7 NOS
7V7 Various US Brands NOS (27 in stock)
7W7 US Brands NOS (4 in stock)
7X6 US Brands NOS (5 in stock)