Big Aged Bronze Over Solid Brass Door Rosettes Sold as Pairs
Back Plates 3.25" Diameter Beaded Edges

These are large enough to cover predrilled door holes
( the screw holes are 3 inches apart )
Screws included with each rosette
Sold in Pairs of 2
3.25"Diameter, accommodates 5/8" neck/ferrell, 3/8" hole in center
Finally a back plate that works on pre drilled doors !
Another hard to find hardware piece, from The Kings Bay