So today at a Pawn Shop I picked up this 20” Paiste Ride as well as a set of Vintage Zildjian Avedis hats. But my question is about the Paiste. After purchasing it, decent sound by the way, I cannot find another like it. It is a 404 and according the serial was made in 86. My question is about the holes, I cannot find another 20” 404 with them online. Does this look like a custom job? The holes are super smooth so if it is it was done very carefully by someone who knew what they were doing.