I don't know that S&W had any association with these guns. There are many Spanish copies out there but Germany has a pretty rich history of revolver production over the years. The Korth would be the culmination, I think.
A line of revolvers manufactured by the German firm Weihrauch.
These revolvers were named after the chief of the Germanic Cherusci tribe, Arminius (latinized name) who led Teutonic warriors during the later stages of Roman Emperor Augustus' reign.
Over the past fifty years the various models have been imported into the United States by different companies. The most well known of the United States importers would probably be Firearms Import & Export (F.I.E.) of Hialeah/Miami.
Putzwaffen=trashguns. After the era of the reichrevolver Germany pretty much steered clear of wheelguns until the reality of the post-WWII economy. J.P. Sauer built western style revolvers for Hawes, Herters and others as well as some double actions under their own name. Korth originally a modest proposition went on to build very high end revolvers. These are by and large okay or better.
Guns by Hermann Weirrauch, Rohm Gmbh (RG), Burgo, clones of Remington O/U derringers for Hy Hunter and others largely fall into the P.O.S. category.