Today’s Watch – Citizen Special Cosmotron

Gone for electrical power today, in the form of a Special Cosmotron, from July 1973. The 7803 movement in these was the last development of the 78 hybrid, electro-mechanical calibre. Running at 36,000 beat per hour, the 7803 has some additional features, indicated by a button at 8 o’clock. This feature is described, along with more info on this calibre here:

This one has a nice one piece case, although other 7803’s have screw down backs. And as with other 78xx movements the day/date change is unusual – more on that can be found on the X8/Cosmotron page:

The watch is running well 🙂


This entry was posted in Vintage Watches and tagged , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.