I'm trying to find a short story that I read, probably in the late 90s but I'd expect the story is a lot older than that.
In the story the main character (actually a family I think) somehow come into possession of a table that has a magical property - it can copy items that are placed on it. I think it's only paper it can copy, but they use it to make perfect copies of bank notes.
The government tracks them down because the copies are perfect, so the serial numbers are always the same.
I think it's revealed at the end that the table isn't magic at all, it's the person using it that has the ability.