The Single Ring is not Gillette's earliest safety razor, but it's close. It was introduced in 1906, just three years after Gillette's original design, now known as the Double Ring. And really, there is little to distinguish them from one another except whether there are one or two decorative rings at the top of the handle.
This Single Ring, plated in silver, was one of those made in the first year of production, 1906. The silver plating is in extraordinary condition for its age, the teeth are all straight, and it sits in its original case, couched in regal purple velvet. The early Gillette logo in the case is in great condition, but the outside of the case has seen better days. It is mostly intact but half of the snap closure is missing, and the back hinge is somewhat deteriorated.