1956 RCA 5U4G 5AS4 Tube Tests NOS Coke-Bottle Black-Plate Rectifier

Description

Up for sale here is this beautiful vintage RCA 5U4G/5AS4 coke-bottle rectifier vacuum tube.  The code on the base is 6-09, for the 9th week of 1956.  This has what's known as a "tilted bottle"--the glass is slightly crooked, but it will still work fine.
I tested it on my calibrated B&K 747B tube tester, and it tested at 90/87, with no shorts or grid emissions, on a scale of 0-120, where 65 is minimum good.  This is a gorgeous design, with huge ribbed black plates, wide D getter at the top side, a nice patch of silvering, and a rectangular mica plate at the top.  This is a great tube, testing at NOS levels, and is guaranteed to work well for you.  Please see my pictures for details.
US shipping and handling is , and international is .  If you have any questions, please ask.
I have more tubes and other vintage electronics listed--feel free to take a look!