Pieper was known for innovation and mechanization. He and his son held many patents. A friend asked about Pieper sidelocks. In all honesty, I have seen only a few examples. I went over the Pieper catalogs. By and large, they produced hammer guns and boxlocks. However, they also offered sidelock.
Does any one here own a Pieper sidelock?
A very early side cocker. I suppose it might be called a sidelock of sorts.
An 1888 ad showing a Diana sidelock.
An Anciens Etablissements Pieper 2000 series
An Anciens Etablissements Bayard 410-412-415 series. I do not believe this is a true sidelock, but rather a sideplate. This gun has 2 sets of barrels. One of which has had claw mounts added to the cape gun set.
According to the catalogs, they made a Pigeon grade that was highly engraved. But I have never seen one.