My mom owned a florist in the small Mississippi town where I grew up. These are the worn keys on the manual cash register that she used in her shop for some 30+ years until her death in 1998. My brother still has this cash register on display in his house.
This also is just perfect fo the Challenge...real history with 10,000 clicks on these keys over the years. And the blurred second tier of keys is Artistry manifest. Traveller