(!!!) (Best Single) 310A Western Electric large punch plate low hours/tests like new 1962 (6.5ma) (highest mA and Gm)
(!!!) (Recommended Single) 310A Western Electric large punch plate NOS 1963 (8.2ma)
310B Western Electric NOS (sold out)
Ceramic top cap for 310A / 328A / 807 / 837 / VT61 (4 in stock) (Made in China)
James Millen #36002 USA ceramic top cap for 310A / 328A / 807 / 837 / VT61 (0 in stock) (Made in USA) (3/8")
