how do you know first edition pokemon cards

how do you know first edition pokemon cards 1st - Old - 100% Vintage - WOTC ONLY - 10 card Gen 1 & 2 1st Edition Base Set Cards:

Name: how do you know first edition pokemon cards 1st - Old - 100% Vintage - WOTC ONLY - 10 card Gen 1 & 2 1st Edition Base Set Cards:
Brand: excellencyproduct.com
SKU: 33456634768
Price: 26.27 USD
Availability: InStock
Rating: 4.018 (19 reviews)

SKU: 33456634768

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Description

If the opponent tried to play conservatively by holding cards in hand, then Cat Synchro could also push for an One-Turn-Kill (OTK)

There is a range of 190 cards, with dozens of recently discovered Pokemon from theGalar region There are 15 powerful Pokmon V and 7 enormous Pokmon VMAX and More than 15 Trainer cards and 4 new Special Energy cards