I think the one in the basement contained something other than Borlands.

GGS makes that shape frame but it holds 53 chips. I got one last year for someone. Maybe you saw one of those someone had made up?

Note the top left chip in Jims frame. $1 Mint is blue with the small inserts. We know 'a few' blacks now exist but it must always be regarded as an oddity as Jim dont have a record of it