First. I don't think they should be created under ANY circumstances for reasons that I and others have already noted in this and the previous related threads.

Having said that, if duplicates were reproduced using an original as a pattern, what methods would be used to determine that said originals are in fact authentic or unaltered? What if someone submitted an authentic unaltered original that had an unreadable or missing area, would the blanks be filled in as (whomever) chooses?

Can-O-Worms that should never be opened IMO