I could've sworn there was a specific word for the situation where someone in the present makes up some historical detail to appear authentic, manufactures an antique that is actually anachronistic for the period it is supposed to be from, or attempts to restore some historical artifact with incorrect details.
In a sense this word would be opposite to "retrofuturism" as it is a similar mistake made in the opposite direction of time. But more than anything I want to describe the incorrect restoration of some historical artifact, in an attempt to hide the fact that it was not original.
e.g. "The door latches, while historic looking, were actually a(n) [word] that didn't actually fit the time period of the building's construction, and we know they were installed in the 90s by someone trying to pass them off as original"
While anachronism would fit, it doesn't describe the act of the item being fraudulent, and has a more neutral connotation.