1952 M52 Hungarian Scope Question

Hello everybody, new member and a big thanks to Doug for sorting me all out. I picked this rifle up a few years ago on an estate sale. All 02 marked down to cleaning rod with a beautiful bore, from what I read that's rare in and if itself. It is an early one, BC0477, with a Russian undated optic on it. The mount is 02 marked and I didn't know if maybe the early ones came with Russian scopes before the Hungarians got theirs ready? Any other early M52s out there built like mine? Also anybody id the sling? I dont see any 02 on it. Thanks, Carl.