Guitar Has Brass Mnemonic Valve!

The guitar had a true device and that's the prize I hunt. There are millions of electric guitars out there ... old ones, new ones, some with a little history and some so dripping with past they are practically haunted. I leave those for the other hunters. I, my friend, am a seeker of the true device. Half note predicators ... staminated tone phasers ... any and all heterodox pickups. This guitar had mnemonic valve (a brass one). It's a sort of prehistoric reverb. I had not seen one in years.

By the way, have you seen the crystal version of one of these? I would love to have a photo for my files. Leave a message.