Wow she sure looks good!! And that "Copper smokebox front"
as well. As I mentioned in a post several weeks back when
my dad and I were working for the WMSRR in July of 1968,
I had no camera no did my dad that dAY we visited Superior.
I saw the 5s copper smokebox paint but I could not see the
7s. But heres a thought and it's just a thought. What about
"copper anti sieze compound? Other than Copper powder which
is I'm sure big bucks if it even exists , I'm sure you can
come up with your paint!A flatt varnish as the solvent base.
After all the powder is what stays on the surface and the
solvant always burns off.