To make identification of Sangamo clocks easier, we have separated them into two different categories, Electrically Wound and Synchronous.
Synchronous clocks (below) can be easily identified by the fact that there is always some type of indicator that shows “seconds” on the dial. This is either a “seconds hand” or a “seconds floating disc. The example top example below shows the “floating disc” in the center of the dial. The bottom shows a separate hand.
Electrically Wound clocks (below) never have a “disc” or “hand” mounted from the center of the dial. The top electrically wound example below has a “sub-seconds” dial. The middle is the most common dial found and the bottom shows the most desirable “visible platform” 
