UL Vinyl decal, measures 1" diameter. Seen on early Vendo machines: V-39 & V-81A, V-44, V-83, VMC-27, VMC-33, VMC-33 3D, VMC-139, VMC-149, Cavalier C-51, C-27, C-33 as well as Mills and a variety of other machines. Sometimes they were on the outside of the machine near the tag and sometimes they were located inside the machine. Nice finishing touch to your restoration !!