If you do not mind what is the birthday of this chip i mean is it 2019 version prototype?
Manufacture time was around May/June 2016
This is the prototype chip made in 2016 for the PhysiBit Poker Chip series I made in that same year.

Original sales thread ...
https://bt.irlbtc.com/view/1724943.msg17263190#msg17263190Viz