How did you get the Tangiers inlay? Also how can I get in a group buy like this?
The Tangiers, Mayfair, and Havana Club labels were designed by Old West Poker Supplies' owner/operator Sal, before he passed. He also ran the group buy and sold them on his website. They are unfortunately no longer available as nobody was able to work out a deal on the rights for the art.
I can't find the original threads as it looks like his vendor sub-forum no longer exists.
As far as future group buys, the best thing to do is watch this sub-forum:
https://www.pokerchipforum.com/forums/group-buys.26/
If you want to do a custom set you can work with a designer and either order directly with Sunfly or work a vendor like ABC Gifts and Awards to order.