rare old advertising piece, cast metal work boot toothpick holder early 1900s vintage

Early 1900s vintage cast metal boot toothpick holder advertising the Hannon Mann Company. I have not been able to find out any information about these people at all. I don't know where they were located, or if their product / company had anything to do with metal casting, work boots, or neither!

It's a great little piece, very detailed, with an Arts and Craft period font on the lettering. Nice patina, in good condition without chips or cracks. Measures about 2 3/4" long x 2 1/4" tall.