Wanted Looking for 20 (a barrel) of the HSI Primary $500 chips (1 Viewer)

I'm looking to buy 20 (a barrel) of the HSI Primary $500 chips. My preference is excellent to mint condition.

I currently have 40 of the HSI Secondary $500 chips and would like a set of the Primary to have around.

By the way if anybody is willing to do a trade for 20 of the HSI Primary $500 chips for my HSI Secondary $500 chips (which are mint and have never been felted) I can do that too.

FYI: The picture attached show my HSI Secondary $500 chips.