Nemo1832

My son is working on an art installation and needs to find £30 of uncirculated 2p coins and £30 of 10p's. Can anyone help me in tracking them down? Somewhere in the UK they must be sitting on a shelf in a bank, so I need to know where and then try and get my hands on the little darlings. I'd be terribly grateful for any ideas on the quickest way of finding them.