I believe the BOA 20A is probally a l000-1200 Chip. I got mine from
John Bennedict maybe a year ago. Price around 900.00
I also have been told that there were in excess of 25 BOA 20. There is NO WAY
you can sort through 9 chips and come up with 4 variations!! That's BS!!
At this point I would value this chip 750-1000 at best.
We really don't know about variations as we were never priveliged to sort through stacks. They might be common-they might be rare. At this point I would not let this variation influence a buy, nor would I place a large premium on the variation. Same with the BOA-5 Error.
Dick