I am looking for information on what type/design was on the powder flask that was issued with the 4th generation (1856) 1851 colt navy-navy revolvers. It seems like there are various flasks that might have accompanied the 1851s as a whole. But did the U.S. navy navies have a specific one?Also looking to purchase an original nipple wrench as well. Can only locate repro or the ones that were produced in the 1970s.Thanks for the help,Mike