I recently acquired two cornets at an estate sale. They are both in poor condition, but before investing in their repair I'm searching for information about them. The inscription on the bell of one says: "Genuine Aug Heinem JW Jenkins Sons Music Co Sole Agents Kansas City Mo". Numbers stamped on each valve - 1st "31", 2nd "35" with "7" below and 3rd "36" The inscription on the bell of the other says: "Fournier Paris Olney Music Co Sole Agents". "B&F" is on the back of 2d valve; "57" is on front of 3rd valve. Can anyone enlighten me on these horns and / or point me to where I may learn more about them?