What you have is a pre-war Deutsches Sport Modell (DSM) 34. Basically a sport/trainer.
Many German companies contracted to make these, including Gustav Genschow (GECO) which yours is.
You'll have to be very lucky to find any parts, especially a safety. But it's a single shot, and the safety is is not absolutely necessary.
Thanks for the info. I don't really need a safety but it would be nice to restore this old rifle.
