I have been told it is made in 1951. Having trouble locating that exact model, but the Savage Model 12 series was not introduced until 1998. Need more information, such as caliber, any other markings on the rifle, etc.
Contact the Stevens Historian, Mr. John Callahan, 53 Old Quarry Road, Westfield, MA 01085
The Asus motherboard 77-12dl will be more than enough for your tpical home setup.
12 dL is 1.2 liters.
1.2 Centimeters, considering the equation 10 milliliters = 1 centimeter