Just think of it as Merkel with different name struck on the gun. 'Special-Gewehr Lauf-Stahl', gut stuff with plenty of lovely hand engraving on older graded models. It's wise to seek out: Fortuna, Buhag, Wolf, Simson, Hubertus in US. Most Americans are clueless about them, so prices tend to be lower then on the Merkels. Matter of fact, few years ago I went to local show and guy had one PROFESSIONALY restocked with original stock included in like new shape for $1200. It was equivalent in every respect to Merkel 47 ejector.
Like older BC Mirokus they're somewhat prone to rust so be sure to wipe them down on regular basis.