welcome to the forum.

Nice kit,Stewart Copeland used them for many years with the police,the imperialstars of that era were mid level drums, and I have hardware from that era that I still use.

The Imperialstars are just not real collectible as a vintage kit.I see 4 and 5 peice kits go for 250.00 -350.00.Single sided concert toms are not as desirable as double sided.

If you want to sell and make the most money you would probably nedd to separate the drums, hardware ,and cymbals and sell seperately.

The snare if in good shape and all original I would guess 250.00 300.00 ish.