So, I wonder if those were some of the ones that were talked about where it was a 500+ MB in an A500 case?
Nope sorry. This was April 1990, over a year before the chipset for the A500+ was even invented. Months before the A3000 was launched.
I'm not sure there wasn't even an ECS denise at the time. Just this 1Mbyte Agnus.