£7.80

Last year I saved 50p coins in a 42g jam jar, which featured in this blip. It held a total of 24 coins worth £12.00. So I've repeated the experiment with 20p coins. This time the jar holds 39 coins worth £7.80. Can't be bothered trying any other denominations. Not happy at how this shot turned out either to be honest, didn't get the effect I hoped for.