Seth Thomas Model 14

This is the mainspring in the barrel of one of these watches that does not appear to have been opened up in several decades, and in these cases it takes some extra work to get the parts clean. Old organic watch oil, made from sea animals, turns green and almost solid. There is certain stale, vaguely metallic, smell to it also. Modern synthetic watch oils do not break down in this way.

All clean now!

Here we can see the lever mechanism, dial side, and the serial number.

This watch is a Seth Thomas model 14. It is 6 size, 7 jewels, lever-set, made about 1893.