NOS. Can be purchased individually or buy both as per picture a matched pair.

This vintage Eimac 4CX350A electron tube/valve is a must-have for any radio communication enthusiast.  This tube was manufactured in the United States and is in pristine condition. The Eimac 4CX350A is a high-performance tube that offers outstanding reliability and durability. It is perfect for use in radio communication equipment and other applications that require a high level of performance. Don't miss out on this opportunity to own a piece of history.