Two, Raytheon #45 tubes, with the shouldered glass envelope. One of the tubes is branded Truetone, the house brand of Western Auto stores. The tube was made by Raytheon for Western Auto Stores, as evidenced by inspection and the presence of the "280" manufacturers code printed on the base, uniquely identifying Raytheon as the original manufacturer. These are of course exact equivalents to the UX245/UX-245, CX345/CX-345, 145, and 245 tubes. Used and tested on a Hickok TV-3 military tester that has been calibrated. Black plates, silver printed logos, firm bases, excellent silvering. Tubes are matched for dynamic gain and structure- test at 2025, 1950 where pass/fail is 1170 micromho. The tubes have the same structure inside and out, having date codes of "280843" and "280626", the 43rd week of 1948 and the 25th week of 1946.
Many other lots of tubes for sale this week.
Shipping is free within the continental US. Elsewhere- exact postage only, no packing fee.