Offered are (3) NOS type 58 Radio Pentode Tubes.  (2) are by  Sylvania and (1) is by National Union.  The tubes are clean and in good condition. The National Union has a tiny crack in the base-it remains firmly attached. Each tests good on the EICO dynamic tester with robust readings and they show no shorts or inter-element leakage. These tubes are used in early radios in RF and IF amps.  The tubes have black smooth plates and side getters with all good silver flashing. Each has grey-coated glass interiors. The production codes are as follows: 139, KU and 052. Early 1930's vintage.  Pick up the tubes for your own radio restoration or repair work. NO RESERVE!! Thanks for looking.