They used to be solid copper now they dip them or spray paint em with a cooper paint and make them out of zinc, lol. But if you think that might be an indicator of knowing your getting old as living past a change in currency, well no not necessarily. This is the true indicator.........the other day I was on the computer filling out some info on my vehicle registration, so they ask for the Month of your birthday and a small screen pops up, quick click, then the day, quick click, then the year and large screen opens and off you go on a rollercoaster ride, eventually I arrived at my destination. Success, my vehicle was registered. Enough of that, making chilli