These are two old lighters, I bought several years ago at a garage sale. They are both have a brass casing with a black plastic inner core. At the bottom of both is written: Match - King, Chicago, U.S.A. Pats. 1935486-1937249. Writing on one is: Unite States Air Corps, the other's writing and colors have faded/worn off. It seems you would strike the side in order to ignite the lighter.