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526AX Raytheon NOS (5 in stock)
53 NOS
53 US Brands NOS (2 in stock)
533AX Raytheon NOS (3 in stock)
534AX Raytheon NOS (4 in stock)
53HK7 US Brands NOS (8 in stock)
547DX Raytheon NOS (3 in stock)
55 Philco 1940's tests like new (52/24)
55 Philco used/good 1940's (52/24)
55 US Brands NOS (0 in stock)
551 Arcturus Blue Balloon used/very good 1930's (43/26)
56 GE used/good 1940's (4.2ma)
56 Made in Holland NOS 1940's (5.1ma)
56 National Union engraved base used/tests like new 1930's (6.0ma)
56 National Union used/good 1940's (5.3ma)
56 National Union used/good 1940's (5.9ma)
56 National Union used/good 1950 small faded getter (4.1ma)
56 no name NOS 1950's (5.7ma)
56 Philco by Sylvania used/good 1940's (5.2ma)
56 RCA Balloon engraved base black plate tests like new 1930's (4.7ma)
