This auction is for a JAN 328A Western Electric used tube, The tube is Hickok RD-1575 Tested, Minimum 1100, Test GM=1950. Date code 6313. SEE PHOTO.... I
used my Hickok RD-1575 laboratory tube tester for testing this
tube.This tube tester has been calibrated by ( Roger Kennedy 2017 ). If you have any questions or issues
after receiving your item, please contact me prior to leaving feedback
so that I may address them. I combine shipping on all of my auction sales. Shipping will be $2.98 first class mail in the U.S.