If he fixed radios, there is a good chance that a lot of these tubes will be sought after by ham radio guys who still love tubes as much as some of us audiophiles. Try looking on Ebay and also go to local hamfest. I still get many of my NOS of audio tubes at local hamfest. Also a lot of his tubes may be currently used by PreAmps and Amps and may have a higher value than new ones. I picked up a gold mine when my Uncle retired and just gave me several big boxes. Over the years I have delved them out to friends. I hate to think of how much I could have sold them for, but they were free for me.