For Sale: Transmitting Tubes in two RCA binders, One 5" X 7 1/2" X 2" thick and the other 5" X 7 1/2" X 3" thick. Dates of data sheets range from late 1940's to mid 1960's. Excellent condition. Price reduced from $25 to $18 + shipping for 5 lbs. Thanks, Pat K9HF