Many watch companies made hundreds of thousands of watches, and some companies made millions of watches!
Since your serial number falls between those two numbers, you know that your watch was made in 1917 or 1918. Cases and watches were often made by different companies and each usually has its own serial number. Be sure to use the table that is specific to YOUR brand of watch when looking up your serial number.
You must use the serial number from the MOVEMENT of the watch... You usually have to take the back off the watch case to see the movement serial number which may appear anywhere on the watch movement. Be sure to use the serial number on the movement of the watch itself.
Some American watch brands did not use a consistent series of serial numbers, but most of the big manufacturers did.
Most vintage Swiss pocket watches did NOT have serial numbers and can't be dated by this method.
The second set of numbers from 1,500,001 to 7,555,000 was copied from a book at the Charles River Museum by Joe Brown and 10 additional copies were made by him.
My copy of Joe Brown's copying effort was in turn copied and distributed to volunteers for transcription.
Am Watch co Waltham Mass..the upper part of the stamp in a half circle, with Warrented below that, and Coin Silver below that...without the Eagle stamp, could have been used as early as 1863?
Thanks Sam G Sorry about describing the stamp, I haven't figured out how to download a photo using my smartphone yet.
Jim Schneider transcribed the Waltham printed list and contributed it to the database project.
Jim has a special interest in the 1892 model Walthams and has a web site devoted to them.
Note that we're using the serial number from the watch movement, not from the watch case.