Reverend Rob
Posted October 27, 2021 - 12:19pm
The case itself has a serial number that is not usually that closely related to the watch. Generally, an ID will include the movement number and databases online reflect this, as cases can easily be swapped. The ID of the piece is the mechanism, in short, the opposite of motor cars.
The case numbers can be used to ID the case manufacturer but don't necessarily mean the watch is by them. Watch manufacturers often utilized outside case makers.
The Shield indicates a manufacture date of 1929 for the movt.
Fun Fact: Small pocket knives were used to cut quills or shape cut quills to facilitate writing with ink, and were called 'Pen Knives.'