(!!!!) (Recommended Single) 2A3 RCA gray plates NOS 1960 (104ma)
(!!) (Single) 2A3 RCA branded CBS black plates like new 1940's (103ma) (high Gm)
(!!) 2A3 Sylvania black plates connected in middle like new 1940's (104ma)
(!!) 2A3 Sylvania rebranded National Union black plates connected in middle like new 1940's (108ma)
2A3 Ken Rad coated glass low hours/test like new 1947 (read review)
