12 gauge benellis all come factory drilled and tappedIt's definitely Weaver
Might Google your specific model number and check if it came factory drilled and tapped. That'll tell you whether it was added later or factory
Then that settles it12 gauge benellis all come factory drilled and tapped
looks like a standard weaver style mount for a benelli shotgun to me https://www.mountsplus.com/weaver-93a-top-mount-base-48506-for-benelli-super-black-eagle.html
c model number and check if it came factory drilled and tapped. That'll tell you whether it was added late
12 gauge benellis all come factory drilled and tapped