Curious about halo's

[ithacaartist]

Originally Posted by Norme

The barrel serial #'s on the earliest Navies, the 1906 n\s, we're struck before bluing, on all subsequent guns, like the 1916 in question, after bluing, and they should show halos.
Regards, Norm

To me, the C/M looks worked/buffed--there are no sharp edges such as the re-struck serial. The halos on the latter look chemically induced to me. They appear to be small spots of something dabbed on, to remove/lighten the bluing. They should be most intense in the material closest to the strike, and fade away in a gradient. These have edges that are visible, and are of uniform tone. Makes my spidey sense tingle...