Research Note: Elgin Serial Lists designate the preceding run as Grade 303 (12-Size Model 3 with 7 Jewels). However, multiple reports near the end of the designated serial block indicate later movements in the run are not Grade 303 and instead feature 15 Jewels. Most reports have occured after serial number 25,469,001 within the run. Considering this run is comprised of Grade 315 movements (12-Size Model 3 with 15 Jewels), it is reasonable to conclude the preceding run of Grade 303 ends at 25,469,000 rather than 25,470,000 as indicated in factory serial lists.