Savage 24 DL 22Magnum/410

You've already figured out a lot about the gun. As you say, it's a pre-'68. Others on this site can help you date it more accurately, probably to the early to middle 1960s. The "DL" standa for "deluxe." The gun should have a Monte Carlo stock (dips down at the top rear of the stock) and should have checkering on stock and forearm. The magnum probably makes it worth a little more than if it were a .22 LR. The value of these (and all 24s) depends heavily on condition. Raggedy one can still be found for well under $300, but really clean ones often show up with price tags in the $600 or higher range. I personally see few sell for that much; selling prices that I've seen in the last year or so have been in the $400 to $500 range for guns with good bluing, clean, uncracked wood and an unworn finish on the brushed nickel receiver and gold trigger. Ultimately, price is whatever the market will bear. Good luck with selling or keeping. Please remember that if it's a family gun, once it's gone it's gone.