Sylvania Radio Tube Repairman Caddy Case Repair Box With Tubes Vintage. This metal case marked Sylvania Radio & TV Tubes Radio Television Service comes with 77 Tubes New/Used. The caddy box measures 22x14x9 and is in working condition. Check out the pictures as they are part of the description. Any questions, Please ask. Check Out My Other Auctions As I List New Items Daily.