Most of the info has been found after you bought them, Walter. As you know, I'd been trying to find out as much as I could so I thought I'd share all I know so far. Still lots of information to find so I'll keep looking as I hope to get a timeline for all the different types one day.
Only your good self and 2 others on here bought some (both still enjoying them I hope) although the 1 collectors have had some too but, in the main, pretty much ignored in the chip collecting world I'm sorry to say. I expected as much though, to be honest.
Many of the plaques have gone to new homes though (mainly Bond fans) so at least I managed to get some of them out to collectors.
Thanks, look after yourself.