Hey John, I've GOT one of those. If I ever get to my storage space anytime soon, I'll dig it out a take pics. Mine has 10 IMPERIAL lugs, and is a B/O from the early 70's, with "NYC Board of Ed" hand-engraved on the inside. Not selling it!!! :D Essentially, it's an unplated Supra.
The reason that these drums exist, like so many other Ludwig oddities is the school bidding system. The NYC Board of Ed, for example, would say "We need 500 metal snare drums for x-amount of $$$" and Ludwig would strip the drum down accordingly. No plating, as in my case, would reduce the overall per drum cost, times 500. The cost could be reduced further by using Classic instead of Imperial lugs, which cost more because they require a more complex buffing procedure, with their multiple levels of art-deco lines. Ludwig was very open to special-orders like this back in the Chicago days, when they basically owned the American drum business.