ellenbr - Pauly worked with Durs Egg in England. Egg built a couple of Pauly guns, one of which is in the royal collection today still in the case with all cartridge making accessories.
After Pauly and Egg got together, Pauly abandoned his gun experiments and went full fledged into dirigible airship design. Egg financed Pauly's "Dolphin" which eventually failed and lead to financial ruin for both Pauly and Egg.
In all of my studdies, I can't find any evidence that Pauly was a gunmaker himself. He always shared a shop with an established gunmaker and worked on design. Pauly guns were made by Prelat, Robert, Egg, Roux, Lefaucheaux etc. Think of it like the Anson & Deeley Patent and all those who made guns on that patent.
Many of them included changes to the Pauly patent, like the gun made by Robert in 1832, which included a very Pauly like cartridge, that had a nipple for a percussion cap in the back instead of the Pauly Rosette.
Sadly, many of the Pauly-like guns were a regression of the Pauly patent, rather than a progression.
