Advertisement for the United Fast Color Eyelet Co. owned by United Shoe Machine Company. Diamond Brand Fast Color eyelets were made out of brass, nickel plated and then the flange was covered with a specially formulated plastic that provide a durable colored finish.

The flange of the eyelet exhibited 2 small, raised diamond trademarks to confirm the eyelet was the quality standard.

The United Fast Color Eyelet company was absorbed into the United Shoe Machinery Company, joining S.O. and C Company of Ansonia, CT , J.C. Rhodes Company of New Bedford, MA, Hughes Eyelet Co. of Taunton, MA and the National Fast Color Eyelet Co.,

1907 advertisement from the Boot and Shoe Recorder, an industry trade journal.