"First Run" (First Production):Kastaplast First Run discs are notoriously sought after. They represent the original production of the mold, and there is always a very limited number. Collectors hunt these, regardless of the mold.
Stamped (Gold Ymer Swedish Open): This is the most specific and valuable feature. The Ymer stamp is a special stamp that Kastaplast used in connection with the Swedish Open in 2023. This combination of First Run and a limited tournament stamp (especially in gold) was only sold in a very small edition – often only available via Mystery Boxes or at the tournament itself – which makes it a true collector's item.
