Retrofitting Vintage doorknobs on bathroom/bedroom doors
I recently purchased vintage style, inactive, doorknobs from Anthropologie that I would like to retrofit on existing doors in my bathroom and bedroom.
The hole in the door (where the latch mechanism and doorknob were secured) is larger than the rosettes that came with the vintage knobs.
The vintage rosettes are about a 1/4-1/2" too small and thus cannot fasten to the door directly.
Does anyone have experience retrofitting vintage knobs on a modern door? The solution seems like it would be relatively easy, but every where I have been (Lowe's, Ace, Home Depot, etc.) is either confused by the problem or simply don't have an answer.
Any help would be much appreciated!!!