As you probably know, Winchester stopped production of the '94 Rifle in 1924 and came out with the Model 55 (a Model 94 rifle under a different name) while the '94 continued production as a carbine only. Later (about 1933) they introduced the Model 64, which was still the same basic '94 rifle. Some of the standard features were changed, and most of the previously available special order features were no longer offered.
I'd double check the 1930 information, as they weren't even built yet. It has to be an original gun for the values given to apply.
Anyhow, it's still a '94 rifle at heart, and here's what the Blue Book says:
100% there ain't any
98% $ 850
95% $ 700
90% $ 650
80% $ 600
70% $ 550 and $50 less for each 10% drop in finish.