Offered are (3) NOS RCA 12SA7 Pentagrid Converter tubes.  (2) are 12SA7 and (1) is a 12SA7GT type.  All are clean and in good condition. They each test good on the EICO dynamic tester with NOS readings and they show no shorts or inter-element leakage.  1960's date codes.  Used extensively with series-string type Radios of the 40's and 50's. Pick up these three for your own repair or restoration work.  From the radioman's tube boxes, from a cool, dry, smoke and pet-free workshop.  Mouse over the photo images to zoom in.   NO RESERVE!! Thanks for looking.