I have a 1960 "Club Date" 4-Piece set. It has the single, center-mounted lugs (instead of the double lugs mounted near the edge), and ALL original hardware.
It has a 5"x14" WOOD snare, a 14"x22" Bass, a 9"x13" tom, and... get this - a 12"x15" floor tom! According to a few people, this is totally abnormal.
After years of inquiring everywhere, the best answer I got was from an old vintage drums expert. He believes that when it was being manufactured, a floor tom must have been damaged or lost or something, and with no extras available, the assembler must've pulled a marching snare shell off the line before it was drilled, and drilled it and finished it for floor-tom usage.
Wouldn't that be a Manufacturer Released Error (like the "Upside-Down Plane Stamp)?
Would that make them worth more to a collector?