500$. 6mm, color case hardened, Henrion, Dassy & Heuschen (French, and Belgian) made Lincoln-Bossu Velo-dog revolver. The velo ( loose translation for bike) dog revolver has a cool origin story, it was originally designed for mailman that road their bike from town to town in Europe. Back then packs of wild dogs with fatal (at the time) diseases, and would harass people biking through. So they developed a snag-less pocket revolver with a in closed hammer, and foldable trigger. Located 30 ish minutes ne of Dallas, text 9zero32six9six704 500$