When you see the tops of the devices all the same height, (Even the design of the bust and building is affected) it is a circulation issue with this coin. Going through a lot of vending machine flatten the tops of the devices. So it is more of a damaged coin issue. on this coin. The '1' on the date is weaker, so I feel it was affected with a small amount of grease on that device. (nothing else on that area is showing the same weakness) Thus it is shorter on the single device.






















