This particular set has always been very interesting... and as Poughman mentioned, it was discussed extensively over at DFO, but I don't recall the results of said discussion. A Rogers anomaly for sure! Ploughman... what was decided on these? That asked though...
... there is no Buddy Rich connection with this set, prototype or otherwise. My BR collection is extensive and I have a lot of material from his Rogers endorsement period.. ( 1960 to 1966 ) .. Buddy started with Rogers in 1960, but doesn't show up in a catalog until 1962. ( course I have to mention that I have never seen a 1961 Rogers catalog... is there such a thing? ) Rogers debuted SwivoMatic in 1958, so Buddy's Rogers sets were ALL outfitted with Swivo hardware. He never used the W&A Rail Consolette tom holder during his Rogers endorsement... same for the cymbal holders shown with the set in question. Of all the pics I have/seen of BR during his EARLY Rogers endorsement, he is playing what would ultimately become the Rogers Buddy Rich Celebrity outfit, with of course SwivoMatic hardware. His early sets featured Bread & Butter lugs of course, but then went over to Beavertails pretty much as soon as they were available in 1964.
Interesting set of Rogers nonetheless! This is the only set I have ever seen with this particular style Beavertail lug and W&A holders.
Tommyp