First things first - What a very kewl name for a razor

I stumbled upon this little set looking for something else.
The box is metal with some paper artwork stuck to the top and instructions inside the lid. The insert is also formed metal, with place for the top, the handle and some blades.

Its a totally different take on adjustablility - Simply put, its pretty much a spring loaded shim. The bottom plate is pressed with a recess in it that is designed to cater for the "shim springs". There are no markings anywhere so precise repeatibility would be a small problem.

The Handle and base plate are made out of aluminium. The topcap is some sort of ferrous metal that has been plated and the shim is spring steel. Me thinks that the shim will need to be dried carefully and oiled after each shave to prevent rusting as this one has some small signs of oxidation.
Its a very cheaply made razor and the tin probably cost as much or even more to manufacture.

A search online brings up one entry thread going back to 2011, with not much info. Guesstimate on that thread says pre WW11 - so somewhere in the 1930's

It has a non-standard thread. its 5mmx0.75 - so my 3/4 turn probably opens it up about a half a mm.