How much do you think is here?

When I retired a friend bought me a money jar. I have been putting coins in it intermittently - mainly 20p, some 50p, some 5p, and a few £2.
We are off to New York for a few days on Thursday so I thought it was time to break into it!
How much do you reckon is there? Let's see who's good at estimation! (I was pleasantly surprised!)