GE  JAN 5814A TRIPLE LAYER MICA  BLK PLATES made in USA tube. Tested 79% good. These are very rare tubes and are known to be the best sounding tubes of all the 12AU7 5814 tubes that were ever made. GE 5814A is a great sounding replacement for any 5814A / 12AU7 tube type. Manufactured in the 50's which were highly sought after. Price is for one (1) tube only. These will be very carefully packed in foam and bubble wrap and foam peanuts and shipped with Canada Post.