I have collected old model 70's for quite some time now so have a fair knowledge of them. The 1947 model 70 is known as a "transitional" model. It had a limited run from 1946 to @1949. This model differed from the original model by the omission of the clip loading slots on top of the reciever, the factory drilled and tapped rear bridge (for scope mounting), change from 20 line to 18 line checkering and a new scope friendly saftey called the "clamshell" safety. These guns retained the bulbous grip, cloverleaf tang, and some more handbuilt internal parts that were changed in 1950. The scope bases are Stith. The rear base used existing reciever sight holes only so no additional holes were drilled in the reciever. The front base was inserted into the rear sight dovetail thus no alteration to original gun. This front base allowed installation of a single occular scope only. These models are neat. I have had a few and my main hunting rifle is a 1946 model. I would like to see a few more photos of the entire gun just for the drool factor.