Here we have a pair of 12AX7 vacuum tubes. Tested with a TV-7A/U, these tubes both test 56 or above with no shorts or leaks. The RCA is a 12AX7A short gray plate labeled for Conn and the Sylvainia is a 12AX7 long gray plate labeled for Baldwin.

S&H is 6.00 and will ship USPS first class insured.