I am new to vintage watch in general. I recently purchased a King Seiko 4502-7000 with the 4502A movement. Besides from the 36000 bph, I don't know much about the movement. Can someone give me some information?
Things that I am interested in:
- Power reserve (new/expected vs vintage/realistic)
- Differences between similar versions: is there a 4502B? What is the difference compared to the Seiko lord marvel 5740 movement or the grand seiko movement at that time?
- How do you know what year the movement was made?
- How can you tell if the movement is authentic or not?