"Sylvania" Technician's TV. & Radio "Tube Carrier" and is Old Stock but Never Used, Circa 1960's !!! Solid Factory Dovetailed Plywood Case with Black Vinyl cover. Double the the Fold Out Tube Trays, Plus a Lower Aluminum Fold Out Tray which I've never seen before. This is double the size, compared to the smaller ones that I use to carry in the 1970's. Last photo is a bottom view.
Some normal surface rust on the Nickel Plated Hardware, but still Tight in all the Fold Out Joints.
Measurements : Length is 20 inches, Height is 16 inches, and depth is 9 3/4 inches.
Weight : 13 pounds and 8 Ounces empty.