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(!!!!) (Best Single) 83 Raytheon NOS 1960 era (64-64/40)
(!!!!) (Best Single) 83 RCA Radiotron NOS 1940's (60-59/40)
(!!!!) (Best Single) JAN-83 RCA NOS 1962 (59-60/40)
(!!!) (Good Value) 83 RCA low hours/tests like new 1940's (60/40 and 60/40) 1% section balance
(!!!) (Single) 83 RCA NOS 1956 small amount of graphite flaked off plate (66/40 and 65/40)
(!!!) 83 Hytron by RCA used/tests like new 1940's slightly tilted top mica (60/40 and 62/40)
4CX1000A
4CX300A=8167
4CX350F=8322 subs = DX362 AMPEREX
4CX400A
83 GE low hours/like new 1947 (read review)