That is a BEAUT! How much? Looks very nice. I'm almost sure that is not the original finish
I have an 84 and got it from a buddy GI. They basically came in a nice even blue (not dark super glossy like Bs), a parkerized finish, and the nasty enamel. Franconia models MAY have different finishes but most of those I saw in German catalogues were black enamel.
The only finish I'd respect is the blue or parked and in good shape. The enamel wears off fast If you shoot it ONCE with a ring on, you will chip the paint off.
Having said that I picked up an enamel 88 recently because the finish was a bit better than my 84 and it came with box, papers and serialed mags.