Those look great 00247, the profile looks spot-on to the originals, are they the escutcheons to cover the keyholes where the movements are wound?
Wondering did you turn them with a form tool and part them from solid bar or did you turn your own formers and press them from thin discs cut from sheet? Not easy to tell unless we can see the backs of them.
Why are you struggling to find pins to fix them when you could make a small handful with shoulders for riveting or with threads, in a fraction of the time it’s taken to make the covers you’ve shown there? Surely just get some ⅛″ bar or whatever size they need and turn them down to size to rivet in place or thread them in.
Ageing brass is always a challenge, as its different every single time, so confess to using a whole wizard’s list depending on the brass, what it needs to match and the timescale etc.
The nuts on the back of the vault door were turned from a Naval type hexagon bar which has a nice yellowish tint anyway, only reason being I had a length of it the right size. They aren’t treated at all though, what you see is a few months natural dis-colouration to the gold colour. It’s probably helped along by the monthly 6 foot of rain and cold conditions we get here in Wales.
The grade of brass also has an effect on what colour it’ll go as well as the conditions, some grades seem to want to corrode and not develop much dis-colouration or patina. I learned to avoid the commercial potions in bottles, unless you want your item to have that unmistakeable classic look like an “antiqued” Walmart light fitting.
