Dating a waltham watch movement
Barga is a certified veterinary assistant, holds certification in natural health care for pets, and is a licensed realtor and property manager.
Some companies (as with the Gruen Watch Company), even lost rocords to fire or other natural disaster. I am sure they had no idea that their timepieces would someday be collected.
Serial number records are available for many of the old pocket watch companies like AM Waltham, Elgin, South Bend etc. The number you need is the serial number stamped on the MOVEMENT (i.e the inner workings).
Write this number down and compare it to the charts on this website.
In 1850, the vision of the American Waltham Watch Co.'s founders was to produce high-quality watches using interchangeable parts.
After encountering many setbacks and several long months of adjusting each timepiece individually, the company made its first watches available to the public in 1853. Bartlett.” Serial numbers 5001 to14,000 were produced in 1857 after The Boston Watch Co.