Here’s a recent find for me - a 2.5”, 12lb Monarch № 210. It may be the closest that I ever come to finding a new old stock Prentiss. Virtually 100% of the original japanning finish is still intact. The jaw serrations are crisp, and except for signs of very light use on the tops of the jaw towers, it is practically unused. It came from the shop of a 97 year old New York native. Sadly his health is in steep decline, so my only communication was with his son. However, given the vise’s condition I wouldn’t be surprised to hear that he was its only owner.
Prentiss’ entire line of Monarch vises was discontinued in February 1919, so it’s at least 106 years old. Pretty incredible that vises like this exist, and I know many of them are held by members in this thread