I have never seen a £10 Playboy Club London plaque offered for sale, either... nor have I ever heard of one for sale.

[This exact example is seen in Tom Stroh's work]

I think a £10 Playboy Club London plaque should fetch well over $1800, comfortably... in comparison to other rare UK casino plaques I have sold at the same levels...

...and I would be more than happy to speak with anyone; should they be offered this exact plaque.