These work pretty decent. The feel is right although they are a little heavier. The look isn't perfect but pretty good. Pricey but a good option if you're missing some.
If repros are $60, I'd put originals up for $80 and expect them to sell...but I've been wrong before.
I assume I'd be disappointed in the mismatch between originals and repros if I mixed them. With the finish/plating, etc...I doubt they'll look exactly the same.