Dunn & Randall Patent Hand Saw

This is a super interesting saw with a patented tooth design and three Warranted Superior Medallions. The tooth design was patented by John W. Dunn and Herman J. Randall in 1909. According to DATAMP the saw was not known to have been produced. I'm assuming this is likely one of the few existing examples. The purpose of the design is to assist in clearing the saw dust out of the kerf.