Lizars Challenge

[Manthorp]

Hi! I'm delighted to join the tribe. I own a few interesting vintage cameras including a Russian LOMO (GOMZ) Sputnik stereoscopic 6x6 twin lens reflex camera, a Marion & Co London 1/4 plate Box Reflex camera and most recently, this Lizar's Challenge 1/4 plate box camera.

From my own research, I think it's a Lizar's Challenge Magazine - it has 11 metal sheaths which stack in the back and a simple slide button that drops a sheath at a time and moves a counter wheel. It looks like the couple of illustrations of the Lizar's Challenge Magazine that I've been able to find, but not as sophisticated. Is it a junior version? Or an early one? Is it a Magazine at all?

Any and all thoughts and insights welcome!

Steve