The H.D. and Smith Company was founded in Plantsville, Connecticut in 1850. They are known for making "perfect handle" tools which you can see is inscribed into the steel of the wrench. "Perfect handle" tools are special because they consist of high quality forging. The wooden handles are riveted on, locked under pressure, and water proofed.
This particular monkey wrench was probably made around 1910. It is both antique and collectible. It was used by the civilian conservation corps and "CCC" is also inscribed into the steel making it unique.
Measurements: 8-3/4" long; the width of the head is 2-3/16"
It is in very good condition considering it is over 100 years old. The steel has some light scratches and some dings. You can see in the photos that the inscriptions in the steel are still clear and easy to read.
Add it to your antique tool collection or use it for its intended purpose.