This 1977 TubeCaddy is a valuable item for vintage electronics enthusiasts. It contains a tube substitution guidebook authored by H.A.Middleton that can help you maintain your electronic devices with ease. The TubeCaddy is an ideal addition to your vintage audio & video collection and a must-have for those who love to explore vintage parts & accessories.

The guidebook in the TubeCaddy provides valuable information on tube substitution and helps you troubleshoot issues with your vintage electronics. The TubeCaddy is in good condition and can be an excellent addition to your collection.