These chips were produced to celebrate the 25th BARGE, and were produced in addition to the usual tournament set.
From the 2015 annoucement for the limited edtion sets:
In honor or the 25th Edition of Barge, the BCC has decided to release a Limited Edition set of 4 Chips. Everyone who attends Barge this year will receive this set for free. Additional sets are available for sale at $10 per set on the Barge Chip page. We are limiting each purchase to 2 sets.
