Hi Yana
Your rifle doesn't look like the typical Diana/RWS Stutties, None of them has the angular cheekpiece but rather a teardrop shaped one!
Is yours the lift up breech or the sliding breech as I think the Mod 46 was lift up and the 430 was sliding breech!!
Also, I think the model/numbers etc were etched on so could have been worn off!!
It's an enigma!!
John