I'll see if I can help by posting the pics.
The ejectors and factory single selective trigger would make it a rare find in a already rare 28 ga NID configuration.
The bad news is that the frame has been torch colored to fake the factory color casehardening. To get to those colors with a torch, the temperature had to get up around 500-600F. The resulting problems are:
possibility exists that the internal springs and other parts have been tempered and may cause problems. Only a teardown and examination of the parts for heat tempering will determine this.
The frame casehardening will be lost to the torching.
The stigma of torching a gun devalues a gun significantly.