Well, if you've seen it then it must exist so.....
From the same set?
There are people who are still there after 30 years and (as I have said before) they were holed and some given out when they changed over to the new ones just after they were bought out in 2008?
As I have seen a different £500,000 with larger gold patterning, maybe there were more denominations made. Gaming staff just don't take that much notice of the chips/plaques they use day in day out.
The only way I will find out for sure is by asking the guy who actually holed them, hopefully he can remember more about them. I have asked before but he was vague.
When I see him again, I'll quiz him.