This auction is for (2) NOS, NIB 6C6 Pentode Tubes, (Matching Pair). TV7-D/U Digital Meter tested. Test #1- 48.3, #2- 48.3. Minimum 31.0. The tubes have been tested for Noise, Shorts, Gas and Grid Emission. The tube boxes are in fair condition. The tubes have NO imperfections, like ( Loose or cracked bases, loose top caps, Etc. SEE PHOTOS.... I used my TV-7D/U tube tester with Digital Meter for testing these tubes. This tube tester has been calibrated by ( Daniel Nelson ). If you... have any questions or issues after receiving your item, please contact me prior to leaving feedback so that I may address them. I combine shipping on all of my auction sales. Shipping will be free in the U.S.