This is a western electric 274a tube in original WE box. This is from a retired phone technician. I have sent them to be tested. The tubes are solid in the base. No rattles and the pins have no visible marks. The box has some water stains, as shown in pictures with a date stamp of Because of the fragility add extra padding for shipping. This is being sold AS-IS with NO returns. These are NOT my area of expertise, so please look at the pictures and please ask any questions you have. Shi...pping with heavy packing and additional insurance. You will receive the exact item shown in the pictures. WESTERN ELECTRIC 274A RECTIFIER VACUUM TUBE DATED 6439. Shipped with USPS First Class Package.