@zorloth Sounds like you made a simple mistake. Happens to the best of us. I have a similar list of incoming cards as you (with currently around 40 incoming packages). I also have a checklist for all my Pikachu cards, but even then I sometimes see I’ve made a mistake later on. I’ve re-organized my entire collection yesterday for example, and noticed I had two Korean Pikachu cards in the status “incoming”, even though I already received one weeks ago and forgot to update it, and never ordered the second one after I added it (so that one is currently missing…) I’ve also bought cards duplicated in the same week a few times before, because I forgot to update the status in my checklist.
And it is possible two cards have the same (or almost the same) holofoil pattern, like these:
Source: www.elitefourum.com/t/what-are-the-chances-of-having-the-exact-same-holo-pattern/28633/1 (@azulryu)
Source: www.elitefourum.com/t/neo-rev-holo-bleed-variations/28183/3 (@7l7l)
Although the chances are extremely small, especially to have both of them in the hands of the same collector, the holofoil rolls used to print cards on are repeated pre-defined patterns, so there is always a small chance there are card doppelgangers out there with very similar holofoil patterns for the same card.
In this case however, the damages at the back are ALSO exactly the same. Based on that I can’t give any other conclusion than you accidently made a mistake (again, happens to the best and most organized of us) and it’s the same card.
Greetz,
Quuador