I can remember traveling in Italy , decades ago , when shopkeepers would keep a bowl of coins next to the register to make up the difference between the price rung up and the paper Lira tendered for the purchase . No one carried coins and it was a zero sum bowl .
I also recall a joke back in the day when the Lira bill sizes indicated the value . If you were stuck in a city and the hotels were all full , just make a tent out of large Lira bills – it would be cheaper .
BTW – I noticed your comment about the negative article about PM May yesterday – I hope you are correct , and that GB can recover its sovereignty – particularly over immigration. Otherwise , British traditions and culture will be lost forever . My wife and I have a very good friend in the USA who is from Glasgow . She is just beside herself about Scotland’s push to remain in the EU . In fact I would guess that she would prefer to see a Scotland independent from both the EU and UK .
Good luck in regaining Britain’s control over critical issues .