Philo McGiffin's pocket watch

This pocket watch carries the serial number of 158623, with inscription of 'Philo N. McGiffin, U.S.N'. According to the primary source, it was a gift from his parents.

Serial number 158623 specifications:
Production Year :1871
Size : 18s
Jewels : 15 jewels
Grade : 20
Model : 2-4
Class : 3
Run Quantity : 4900
Production Dates : 1872 to 1875
Total Grade Production : 9000
Movement Configuration : Hunter Case
Movement Setting : Pendant Wind, Lever Set
Movement Finish : Gilded
Plate : Full Plate
Barrel : Going Barrel
Adjusted : Yes
Marked For : Henry H. Taylor