Incredibly Rare Underhammer Flintlock from the Collection of the Grand Dukes of Saxe-Weimar

This rare sporting gun is shown in Howard L. Blackmore's "Guns and Rifles of the World" in figure 287 and is also pictured and discussed on pages 174-175 of "Underhammer Guns" by Herschel C. Logan. He notes it as "One of earliest, if not the first, known arm to employ the unique principle of an underhammer. Truly a remarkable example of gunsmith ingenuity. It was sold out of the collection of the Grand Dukes of Saxe-Weimar from Schloss Ettersburg. All of the known guns of this type appear to have come from their armory and were manufactured in the early to mid of the 18th century.