Are you the original owner ? The reason i ask is because i see that there are several possibilities as to the origins of your kit.. Either a custom order for the original owner,(you ?) or a set that had concert toms with later added lugs to the bottoms, or add-on orphaned concert toms with added lugs to the bottoms added to expand the kit..
The reason i suspect this, is because Tama never made drums with offset lugs, at least i've never seen such drums in any Tama catalog, or in person.. But custom orders were not uncommon for most drum manufacturers back then, so it could be possible that it is a custom..However a custom order for lugs to be added to concert toms wouldn't make any sense, because if the owner were to custom his kit directly through a Tama customer order, he would only have to get toms with bottom lugs that were already available in those sizes..
Whatever the case, you certainly have a unique vintage Tama kit..Are you sure your kit is from the 80's ? Tama began manufacturing Superstars in 1978..
Follow the link from vintage drum guide to see for yourself..
As to the value of your kit, i can only speculate that there may be Tama collectors willing to pay decent money for a kit like yours, although i wouldn't put it passed the $800-$1000 range, maybe a little more.. I'm not a Tama expert, but i did own a 3 piece original set of superstars that i sold for $500 about 12 years ago.. You would have to ask someone who's much more familiar
with vintage Tama value.. Hope this helps you out ;)