The description in the RENE guide is confusing. I have a magnum only, in the serial number range. It's not labeled magnum, but .22 cal. Correct box labeled RSSM, also came with extra cylinder.
Based on the serial number, it would be the later Type 3So,, you have a RSSMX and the box is correctly marked as RSSM. Only the shipper would show any difference.
The big question is which variation is your gun?
I have one also but the type matters too as stated. Here's the box for my 2-cylinder gun.The description in the RENE guide is confusing. I have a magnum only, in the serial number range. It's not labeled magnum, but .22 cal. Correct box labeled RSSM, also came with extra cylinder.