Here's an interesting M1809 Prussian "Potsdam" built by the Prussian state arsenal of Neifse. These smoothbores were imported heavily at the beginning of the war; and saw a lot of use in the both Confederate and Federal lines.
The most interesting feature about this musket is that fact that it appears to be arsenal-modified to take a M1816 socket bayonet. Potsdam muskets were originally built with an incorporated spring clip that latched into the base of a socket bayonet (instead of the lug-and-channel bayonet locking system found on American muskets.) When these big Austrian muskets were shipped to North America, they were typically sent with bayonets as well. However, in this particular instance, it appears that this musket was part of a shipment of guns that did not include bayonets, forcing the recipients of the musket (whether Northern or Southern) to get creative in supplying the muskets with bayonets. It appears that the solution was to adapt the Prussian muskets to take M1816 bayonets by turning down their muzzles and brazing bayonet lugs to them. This allows an included original M1816 bayonet to slide on very nicely; just as if it were originally made that way.
Apart from it's interesting bayonet alteration, this Potsdam is also in phenomenal condition. The stock is simply excellent. Stocked in European Walnut, this musket has no cracks, or chips anywhere and also has all its original Prussian inspector's marks and inventory numbers; a rare feature on most "Potsdams".
The lock is in good shape with nice crisp lock markings and a solid half and full cock.
The barrel is full length and in nice shape. The bolster and breech are very clean with nice stamps. The bore is good with some minor pitting in spots.
The furniture is all original and all matching. The ramrod is full length and matches the gun.
This is an awesome example of a war time alteration and would make for a great conversation piece in anyone's collection.