Some things never change. In 1584, Scot, the author of "The Discoverie of Witchcraft," admonished his readers to be careful and not spend their gimmicked coins.
:Discoverie" is the first book published in English explaining magic tricks.

I ordered this great cigarette thru a quarter. Paid lots of dough for it and finally got it. I went to the bar to perform it. I needed cigarettes to do the trick. I went to the cigarette machine and placed the change from my pocket into the machine, made my selection and pulled the handle. The pack dropped out and I realized I had just used my gimmicked quarter to buy the cigarettes.

The other side of the 'wife/girlfriend spent my Coin Unique' story is that my wife knows that there are some coins around the house that can't be spent, so change left around my study (never including gimmicks, but I keep that quiet!) is safe from being pocketed... until she forgets...