Recently on an auction site, was offered a "T" nipple wrench with steel pick stored in the top of tool. Second unique feature was the tips on each end of the handle had a threaded brass cap for nipple storage. The last time I viewed the bidding, $240 plus and moving upward. "The Pennsylvania - Kentucky Rifle" by Henry J. Kauffman (1960) Chapter #5 , page 121, plate #111. Brown & Hirth of Pittsburgh Pa. 1886 catalogue. Reference "nipple wrench &c." , item #171. Note item #170. Bottom right center of plate. Have a great week end all. AJ
