No one asked, but I'll give my opinion anyway.
I think all stix chips are generics.
No doubt some were used at the BR.
No doubt there are probably pictures showing them.

AND a picture may show stix chips BUT it does not have to be showing the exact stix chips in my or anyone elses collections.

I bet there are pictures from other illegals showing stix chips.

In other words generics are generics are generics.