These are NEW J.A.N. qualified General Electric 5670W twin triode vacuum tubes. Great low-level preamp valve. **Black** plate construction. Also known as the 2C51. The Western Electric 396A was the prototype for the 5670. The \'W\' suffix denotes a ruggedized version. These were made for the U.S. military, and I acquired them directly from the U.S. government. Guaranteed to be New-old-stock, in pristine condition, in original factory, military style boxes. Combine with otheritems that I have listed at this time, and save on postage. Price is for EACH tube, so get as many as you need.NOTE to all *International* buyers, including from Canada. The $3.00 handling chargeis NOT the *postage* fee. Please do NOT send payment until you receive my invoice, which will include both the handling and postage costs. Ignore any automatic email notificationthat sends to you. If you have any doubt about this, please inquire BEFORE makingyour purchase. Thank you.