STEN gun identification please

[Brit plumber]

I'm surprised that Peter L didn't pick up on the fact that your magazine housing appears to be SECO marked, and is likely from a Danish (or Norwegian) manufactured resistance weapon from WW2...

The story was that the British air dropped magazines and loading tools to the resistance which were Sterling Engineering Co. (SECO) marked, so the Danes adopted it as their own "false" British coding so that the German authorities would believe that the guns were also air dropped.

Sipsey Street Irregulars: Praxis: Homemade Danish Submachineguns. "When guns are outlawed, plumbers will build them in the basement."

If only that was true I'd have 4 resistance STENs in the attic. Also note that the trigger axis pin is orientated the correct way where as if I remember correctly Norgy guns were back to front.