Andrew; not dismissing your knowledge at all. This is how I learn stuff. So - if this kit has re-rings and a Granitone interior - it's 3 ply? Would that be a safe bet? Also on the value of the kit - it's very neglected. If someone really wanted 13/14/16/18/24 - as you propose - yes, it would be desirable. The complete hardware makes this kit worth anything. But the seller has been trying to sell it for years and quite a few good restorers have passed. I'm guessing they offered more than $1000. But I don't want to break up the kit and that is precisely why it's worth less to me. Cheers, PK.
All good. Yes, re-rings and granitone is a safe 3 ply bet. The wrap issues mean it'll always only be a players kit but I do like the fact that it appears to be a complete catalog kit http://www.vintagedrumguide.com/images/ludwig_sets/1975_ludwig_drumsets6.jpg