Wacky Packages Return Sketch Cards Old School Series 6 (OS6/OLDS6)
As far as we can tell there are 44 sketch card artists for this series. The artists work for very cheap their primary reward is that they are given a small number of so-called "return" cards that they can sell. A return card is a blank OS6 sketch card that they can do custom. They typically sell these for between $50 and $150. Artist were given between one and four return cards for this series, depending on how many sketch cards they produced. Therefore, we estimate there are approximately 125 return cards for Old School 6. Mabye one day we'll know the exact number.