Wow I'm jealous!
Plain white has never been my favorite, but with the age, condition, and sizes you picked up here, you've got quite a set of drums!
Everything I see about these drums tells me more-than-likely late 70s. IF I'm not mistaken, the spurs you have made their debut in the 1978 catalog. The badge didn't change until the 1980 catalog. Now, as for the 7/8" tom arms, the type you have didn't show up until the 1980 catalog as well... so if this is all original it was probably not manufactured until mid-to-late 1979 during somewhat of a transitional period.
Just my opinion, anyway.
Now, for value. Personally, based upon the condition and sizes, not a penny less than $1000 (drums and basic hardware only). Again, just my opinion... Hope this helps.
Bill