Read with interest the info on the Sangamo. I have a near perfect Sangamo 23 jewel in Sangamo Case. Unmarked 60 hour. It has the #8225 dial shown in picture on previous post. I am assuming it is a 17 dial. My question: if I have a Sangamo Special 23 jewel marked 60 hour movement in an ordinary case, could/should I put the marked 60 in the Sangamo Case? Should I check to see that I am not messing up the orginal watch? Am sure I couldn't find a spare Sangamo case for the marked 60 hour. Are movements identical and only the dials different sizes? I know there are a lot of questions here. Thanks.