I thought about clicking purloin but then I thought about the Pokémon Purrloin, which had more to do with stealing than money so I decided against it. From there it was a 50-50 since it obviously wasn't ascot.

I always thought it meant pound too. But I probably only heard it on old TV as a kid and just assumed that "ten bob note" was referring to the ten pound notes I was familiar with.

I would say nobody under the age of 50 would really say bob, and actually not even my grandparents say it. I did hesitate for a few seconds though because I thought the question was weirdly phrased in that it said specifically one pound, but you can use quid to mean multiple as in "a few quid" or "twenty quid". The question sounds like it's suggesting you can't use the word quid if you're talking about more than one.