Prototypes in the vintage drum community are probably quite rare, but for some reason the least rare of all the drums get categorized in that way from time to time. Then it gets topped off with an endorser association. Where do people get these ideas? Is it someone trying to scam the unsuspecting buyer or is it purely drawn from inventive and deluded imaginations? Given the $2700 price tag, I suspect the former.
Here is an example of a kit described in this way that might be about as common as any to come along in its era. An early 1970s Rogers Londoner in NE White wrap missing the 8x12 and its tom arm.
If it is at all rare at this juncture, it's only because a lot of white drums got junked along the way. That was simply because it was one of the least interesting and overused wraps ever to appear and, therefore, they didn't retain a high value. It probably remains a good player kit to be used without having to worry much about damage or theft if the gig you have isn't in one of the best neighborhoods and the lights are kept low.
The good news is, if that wrap is needing replacement, you can get plenty of it for short $$ and the kit can be restored to its original monotony.
Prototype it is not and it has nothing to do with Roy Burns other than the fact he endorsed Rogers drums at one point in his lenghty career.
You can probably locate one of these soon at your nearest yard sale for a couple hundred $$.
Caveat emptor.