well i didn't notice where i got the canadian quarter but the Target checker snootily handed it back to me last week, when i was making exact change for my purchase. i said well someone gave it to ME because i haven't been to Canada in about 3-4 years. and we are south of the MASON-DIXON let alone the canadian border!
The big chains like Tarjay and the Mart of the wall will do that to reduce their losses.
Working as a clerk years ago, I was scammed by a slickster with a winning smile who asked for $20 in exchange for his rolled quarters.
After he left, I discovered all the quarters were Canuck! I had to foist them off on other customers in their change because the bank would not take them. It took almost two weeks to unload them all. Many customers checked their change and refused them.