I'm including links to Vintage Drum Guide for your reference...
The badge dates them to 1985 or so. Looks like they weren't making drums in the USA much beyond then.
The color is either Pewter Silk or Silver Silk.
Even without seeing the shells, my guess would be that they are the 5-ply Maple-Poplar-Maple-Poplar-Maple shells. Picture.
I think these would be considered "Artist" series, as they still have the Set-O-Matic hardware... Magnum series had tougher/weirder hardware, and the Spirit series had Pearl-stlye hardware.
The drums, while not explicitly collectible, are decent Poplar/Maple shells, that are going to be thicker, louder and a little more aggressive/attack-y sounding than most vintage drums of the 60s/70s as well as modern thinner shells.
For functional purposes, at least they have nice modern bass drum spurs, but the double tom holder (Set-O-Matic) is somewhat notorious for being difficult to use/adjust, and it's hardly ergonomic - especially with deeper toms.
Hope this helps!