At first I did a double-take at your watch and the "4-size" reference. I sat and stared at your movement not recalling having seen one before. Then I got into my tray of ladies South-Bend and related Columbus and there it was! Turns out I have a 7-Jewel, 6-size very similar to yours, so 6-size it is.
Except for the bow and crystal, the other parts you need are most likely going to come from another watch. We are in a "survival-of-the-fittest" mode, the attrition continues. For more exposure, we can link this topic into "Wanted to Buy" forum and "Watch Repair Questions and Answers" area.
Hopefully someone will have a parts movement with the needed items.
Here's a similar but complete Columbus 7-Jewel, 6-size...
Posts: 10553 | Location: Northeastern Ohio in the USA | Registered: November 19, 2002
Thanks, Lindell. At first I thought it was a 6s but when I put the gauge form Shugart and Engle on it the dial and chassis was smaller than the gauge for 6s so I assumed it was a 4s when I looked for the reference under Columbus watches. According to their reference Columbus made two 4s watches. But, I am just a novice so I don't yet know what I am doing.
Posts: 900 | Location: Wisconsin in the U.S.A. | Registered: April 28, 2008