After the silvering process, the numerals are left with a rough surface; a remnant from the last stage of sanding. So typically one of the last steps after silvering, is to gently heat the wax to melting point, to make the surface of the numerals shiny.
I have tended to do this by heating the underside of the dial with a butane torch, but it can be a little tricky if you care about the surface finish on the other side.
If this side is to be polished, no problem. But if it is to be left silvered, the work is pretty much ruined.
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