What year was a keuffel and esser increment borer model 4334 made?

The Keuffel and Esser Increment Borer Model 4334 was produced in the early to mid-20th century, specifically around the 1950s. This model was designed for sampling tree cores to study growth patterns and health. Keuffel and Esser, known for their precision instruments, manufactured various models of increment borers during that time.