james bond - What's written on Q's cup in Skyfall?

I didn't watch Skyfall, but some of googling gives me this picture which says its Q₁₀.

Its part of Wild and Wolf's Scrabble mug collection.

Each ceramic mug features one Scrabble letter on the front and the official Scrabble letter distribution chart on the back.(Source)

Available for purchase on ebay, amazon and wildandwolf.com.

Here is images for the back of cup you are talking about

And here its detailed look