Czerny's has a 15th century style Del Tin rondel up for auction --not sure they are entirely clear what it is, seeing as they have it listed generically as a copy 20th century.. but in any case, its up for €50 at the moment which is about a third of the price on KoA ($196).
http://www.czernys.com/a-68/?o=33480

Just thought someone might like to know!
-Hadrian