I don't know what they're worth but there darn nice

Their value, of course, is what someone will pay. If they were mine, and I actually wanted them to sell, I would be asking $750. If I were looking to purchase, I would find a three ply kit. But that's just me.

I'm also going to go with $750. Maybe just a tad more, depending on how the stars are aligning on any specific day! My very first pro Slingerland kit was an 80N with 5-ply shells. I really had tuning issues due to the sharp 45-degree edges and that Slingerland just couldn't get a good level to the edges. Having such a sharp bearing edge demands level edges! A good tech can level those edges. Still, I've always like the 3-ply shells better.

I also noticed that the bass drum mount is positioned very close to the front, suggesting that the original tom holder was the Super Setomatic.

-Mark