Use the movement serial number

Dating waltham movements

Hunting cases feature front and back covers. Many runs of similar watches were combined to keep the size of the book and the printing costs reasonable. Just don't take it too seriously.

Things Needed Flat blunt blade Tip

Things Needed Flat blunt blade Tip Ignore the inside case back serial number. Others may require a dull wide blade to pry or pop the cover. Never use the serial number from the case or any other part. Waltham adopted the expedient of simply lopping off the first three digits and substituting a single letter. The watchmaker kept thorough records of its products.

Unlike other watchmakers, Waltham went the extra step by usually identifying the model of the watch on the movement as well. Do not use the case number.

Others may require

Enter the serial number from the pocket watch movement below. Dating a Waltham is an easy task. Not all vintage watches can be dated using the serial number. So welcome to the Gray Book version of the Waltham watch world.

Some American watch brands did not use a consistent series of serial numbers, but most of the big manufacturers did. If there is no lip, carefully wedge the blade into the seam and lift. Problems were encountered with the new production methods.

The list will provide the year of production, but not the exact date. It provides no information. Use our new crystal size guide to find the proper fit.

Waltham etched a serial number on every watch movement along with its name and trademark. This information can be used to find the year that the watch was made. Today, Waltham watches remain highly desirable collectible timepieces. Press down on the crown and a tiny hatch will release the cover.