spacelion2077
100+ Head-Fier
Ah. Interesting.
@spacelion2077, is this the seller/listing you bought from?
https://www.head-fi.org/threads/sold-abyss-ab-1266-phi-tc-headphone-deluxe.936934/#post-15821561
EDIT: Crossed with @vonBaron's issue.
Yup, it is an authentic headphone with serial number confirmed by Abyss. It has to be registered within 3 months of purchase time to get the extended warranty but the seller was not aware that during the time of the purchase.