Yes, that's either a B&L or a Kuharsky (sp?) mount. They were virtually identical and took scopes without internal turret adjustments.
They typically required drilling and tapping 4 holes. You can tell if the rifle was factory drilled by the location of the Savage logo on the front receiver bridge. Earlier guns has the logo on top. They moved the logo to the left side when they added holes for scope mounting, so it wouldn't be covered by the scope base. The first two digits of the serial number are generally pretty close to the year the gun was made.
I'm pretty sure the model designation is stamped on the front of the receiver, under the forearm.