The chart below is the 1904 catalog showing serial numbers by Model assignment. The red arrow shows the 200,000 numbers blocked out for the Model 5. Remember, by this point the company had been making watches for nearly 20 years, and the serial numbers had yet to reach the million-mark. In another 10 years the company would stop pocket watch production entirely, so I question if they actually produced the 3 million watches they were supposed to have made.
The blue arrow in the above chart identifies the run into which this next watch falls. Notice that from SN 10,000 where the Model 1 leaves off up to SN 100,000 there is only Models 2 (hunter), 3 (3/4 plate OF), and 4 (KW OF).
My thanks to our own Jon Hart for this example, a gilt Model 2, SN 88645:
The rarest Maiden Lane of them all was the 21-jewel variant. Available in two separate runs of 20 and 60, for a total of 80 ever made, the earlier patterns had no jewel count, some runs simply had the letter "J" after the "21", while the later runs had the word "jewel" spelled out.