Offered here is reportedly a one-of-a-kind "30 Bullet Holder" for either a Volcanic Repeating Pistol of a New Haven Arms Repeating Pistol. The design appears to allow for rapid loading of .31 Volcanic cartridges via a sliding door that, when opened, would drop the cartridges down the pistol's magazine tube. It is constructed of six pewter tubes soldered together with one end closed off and the other acting as the aforementioned door. This may be the product of an ingenuitive period craftsman looking for a way to speed the reloading process of his own pistol.