Thanks kevins...I was in the process of posting almost the same pic! LOL! (Still trying to figure out some of the site functions)
Serial number is 187,426 which (theoretically) places it late 1967 or 1968, could be 1969 but I doubt it.
Twin Streamline lugs & Zoomatic strainers were only available on the H.W.H. & the Contest model Parade drums, but the Contest model had wood hoops.
I did make an error on my description of the shell, this is a Mahogany/Poplar/Maple 3-ply not a Mahogany/Poplar/Mahogany. Slingy changed to the Maple interior ply in mid 1963 according to the Vintage Guide.
Very-Very Nice Kevins! My other Student RK has the dog-tag badge but Beavertail lugs and Masonite shell. Needless to say the Blue & Silver Duco is really chipped up but can't bring myself to re-do the finish. It's a very odd looking looking drum, looks like Slingy thru together a bunch of spare parts, which could very well might be the story behind it. In the process of getting her back together, will post pics when she's done.