RARE pair of Shieldplate SP-122 vacuum tubes for Tyman radios

Description

These are RARE tubes. Only version of tube manufactured by Shieldplate. I believe they were specified for use in the Tyman 80 radio. These tubes are untested and are sold for display. I normally test tubes before listing, on my TV-7 tester, but there are no settings in the manual for these tubes. They do have continuity across the large pins though. We aso have a whole box full of blue Arcturus and other tubes available by contacting us at 9375729297