3 Vintage Photocell Electron Amplifier Radio Vacuum Tubes 868 Radiotron 918 A37

Here are 3 vintage photocell Electron Amplifier Radio Vacuum Tubes. There are 2 RCA Radiotron 868, possibly new old stock and one etched base 918. None have been tested since I do not have the settings for my TV-7.
I purchased a large collection of many NOS vacuum tubes which I will be listing so be sure to check my other listings.