Parallels are rare and exclusive variants of certain cards. Special chosen subjects will have a numbered variant that is coloured/designed slightly differently, to help demonstrate their rarity. There is a “#/25” stamp in the corner of the card, to show you how many of these cards will ever exist. If you choose to print your card, the # will be replaced by a number that shows what version of your card is, such as 1/25, 5/25 and so on. This will not necessarily be the same as the count at the time of your order.
The /25 represents how many cards will ever exist, in this example, this would be 25. A 1/1 means there will only ever be one of the card in existence – meaning it is very rare!