Ron,
Work has been NUTZ, but finally, here's a little more information. Attached is a pic of the "standard" Suprema configuration. The barrel of yours seems a little longer, so it might have been done at home by a former owner. It's hard to say now. If it has a Made in Italy or Made Italy mark, it was probably done by one of the importers. Otherwise, someone may have wanted their rifle to be a little handier.
To make you avatar, go to the Campfire forum & there's a sticky relating to resizing pics for posting. It will also work for making your own avatar.
Open that link and upload a pic from the picture file of your computer. Follow the prompts and size it no larger than 100x100. Save it to your pic file. Then go to the user control panel and open the profile prompt.
Under avatar, click the upload image from your computer prompt and just click on the pic you resized.
If you still have trouble, upload the pic to a post here, and I'll size & make it your avatar. Usually, Bruce-n-Bruce do stuff like that, but they are both AWOL.
As an aside, the Suprema shown is a tragedy. It was a Torino, and those are scarce! SW