N7NE writes "I recently received a letter from a former work mate asking me if I could identify some large vacuum tubes he had found in the basement of a home he just purchased. He knows I am a Ham Radio operator so thought I might have some knowledge in this area. So far I have been unable to locate any information on the tubes so am seeking help from QRZ readers. These are U.S. Navy vacuum tubes. One is Type CWL-851, serial 26812, cont. 82338, 1000 hrs, W dated Jan '43. The other is Type CHS-38151, contract 39218, serial 1720, Sylvania, no date, 1000 hrs. These are large tubes, about 6 inches in diameter and 24 inches long. If anyone has any idea what these were used for or if they are rare or worth anything, my friend would be excited to find out something about them. Thanks all and Best Regards, Ned"
