I recently came into possession of a Seth Thomas Grandfather Clock (picture attached). Unfortunately, the individual I received the clock from has passed and I am at a loss regarding this clock, the company or it's history.
Here is the info from the back of the clock. I did not yet open the innards to pull info from other areas. Maybe this is enough to assist your analysis.
Seth Thomas - Tempus Fugit
Movement: 403-015 21