obviously build as a needle fire double gun with the original unloading rod still there
http://www.simpsonltd.com/product_info.php?products_id=30781

"14 Gauge; Good bore, good stock, 30'' barrel, Manufactured circa 1870s with original browned finish Damascus barrels, casehardened frame and mounted in walnut. The frame and tangs are fully scroll engraved. The bottom of the frame is silver inlaid with a sheild pattern around an eagle. The bottom of the trigger guard has a silver inlaid dove. The top of the barrel is silver inlaid C. SVENDSEN IN KIEL, with a silver inlaid C.4 on top of the rib. Fancy trigger guard with a bone grip. The stock has a fine checkered wrist and a cheekrest. Original sling swivels and ramrod are in place. The barrels retains some of the browned finish and the frame retains some traces of case color, having turned mostly an even gray. The wood has small dings and scratches overall. The action is working however will need some attention. Barrel lockup is good. This was a high quality gun in its day, and although showing some age and handling has been very well taken care of. Antique., s/n 61xx "

C 4 on the barrel can point to Collath shotgun cartridge No.4 because Berger was using the Collath shotgun cartridges and Collath use the Berger shotgun cartridges on special order but it must be than the original paper needle fire version of Collath cartridge. C. Swendsen in Kiel was without a doubt only the local gunmaker who sold the gun and put his name on it.