Augetron

This photomultiplier is believed to have been made by A C Cossor in England. No electrical information or other data has been located. It is fitted with a British B4 base at one end and a British B7 base at the other end. There are four side contacts (two screw terminals and one cap and on the opposite side to these, a wire prong). The one photo of this tube is on the National Valve Museum (England) website. Any information would be greatly appreciated.