This is one of Pokemon's first ever print errors. With the first print run of Japanese cards, instead of an extra stamp, they were missing a rarity symbol. Today, these cards are known Pokemon TCG: SV6 Transformation Mask Booster Pack (Japanese) Pokmon Trading Card Game SV7 Scarlet & Violet Booster Box Stellar Miracle Japanese Sealed PSA91996 Pokemon Card Japanese Basic (Base Set) Bill No Rarity Symbol eBay