Recently inherited this watch from my wife's grandfather who was presented with it on his retirement from "Hercules Pipefitters" of Louisiana Missouri in 1977.
I am welsh and live in Wales, UK with my wife.
I have looked through this site and the numbers don't seem to match up with a specific model / watch
As you can see in the photos I cannot determine if the serial number is 218 or 2181, any thoughts please? On the case front is N6.