That appears to be a pretty early rifle with a "perch belly" butt stock.
Looks to be in pretty nice condition for a 100+ year old rifle.
The bore condition matters alot.
Unfortunately,
The side mount kills the collector value.
My WAG is
$1500-1800 without the scope mounts extra holes.
And $700-800+ as is if the bore is nice and the stock has no cracks. Maybe a bit more to someone who just wants a vintage lever action hunting rifle. Although the scope is cool, it doesnt have too great of value.
Other more knowledgeable members will be along shortly to offer their opinions.
You may also want to post this in the Savage Collectors Forum here at the fire.
Good luck. Your Grandfather had fine taste in firearms.

Last edited by 06hunter59; 07/24/21. Reason: Addition