Ten stickpins are about 2.25 to 2.75" tall. In order shown the first two are for "Wyandotte." The next two are for "Malleable." The first is a figural aluminum diecut showing salesman and stove with a lady at the left. Reverse includes text "Souvenir Lewis & Clark Exposition Portland, Oregon 1905." The second piece from this company is a heavy silvered brass figural. Next comes one marked on back "Cooperative Stove Co." white enamel front reads "Royal Ruby." Next is another enamel for "Sterling Ranges." Next is shield with ribbon accent for "Peoria Stove." Next is another figural with tiny front text reading "Radiant Home." Next is aluminum reading on back "The Aluminum Cooking Utensil Co." while front has company logo for "Wear-Ever Aluminum." Next is gorgeous figural highly embossed brass for "Acorn Stove." Last piece is from the same company but this takes the form of a silvered brass figural acorn charm. Company name is around the top edge and reads "We Use Acorn Stoves." A couple are VF but most are NM to Mint. Early 1900s.