I have seen coins, some of them from other countries, embedded in cement or bitumen in a few places. I have also seen the odd coin or two glued to cement etc . I have bent over to pick one up and then realised that it was attached.
No, but I remember somebody once glued a two dollar coin onto the ground at school. They then sat back and watched sad sods try to scoop it up. I'm pretty sure I was one of those sods. Two dollars could buy you lunch was my thinking.