Living in the Southeastern part of the Mitt, (Michigan for thoses that may not Know) All my life we have gotten in change Canadian coinage. It wasn't a problem till the exchange rates changed and it it dropped in value. Then the stores started posting signs @ the registers NO CANADIAN ACCEPTED! But if you didn't watch em close they had no problem slipping you some in your change!
In the early 70's with the influx of foreign nationals from one geographic region buying and running gas stations and party stores. They started a scam that a lot of store keepers, soon followed They would drive over to Windsor and when it was $125.00 Cd or better for $100.00USD they would get a couple of thousand in change. Bring it back and then slipp a coin or two in with EVERYBODY's change. It got real bad when one local station would give back .97ยข Canadian , when the bill was $1.03
But I have noticed that lately, in addition to the Canadian I have gotten, copper looking coins from Bermuda, Bahamas, Mexico and a shilling coin a long with others form parts unknown. They look like cents,nickles, dimes and quaters.
A quick glance when getting your change and then a dump in the pocket, I don't find out till I go thru the stash a couple of weeks later.
I am wondering if any others, have noticed an up turn in the foreign money being slide in to our monetary flow.