Up for sale is a vintage electronic tube manufactured by Raytheon in the USA. This tube model is 38266A, also known as RK21, and is a high-grade rectifier tube. The tube is new old stock (NOS), meaning it has never been used before and is in excellent working condition.

This item is a great addition for vintage electronics enthusiasts or collectors. It comes bundled with the original packaging and specifications. The brand, model, and country of manufacture are Raytheon, 38266A = RK21, and the United States, respectively. Don't miss out on this opportunity to own a piece of electronic history.