This is my personal Model 24. Technically, it's a Savage 24V, series C, made by Savage in Westfield, MA in 1963. It's a .223 over 20 gauge 3-inch. Originally the rifle barrel was chambered for .222 Remington, but a previous owner rechambered it for the more available .223.
I equipped it with an old Weaver 1X scope (no magnification). This works great with the .223, and can be ignored when the 20 gauge is fired.
It's hard to find a more versatile gun.
John