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20 size Waltham/Nashua Presidential Presentation Watch
Photo of the dial plate of the movement showing the unique Nashua circular bridge held in place by 3 blued screws and the circular spring used to locate the arbor for the special "letting down and dismantling click" for the Stratton's patented barrel and mainspring mechanism. Also visible is the Nashua assembly number 173.
© 2006 Peter Stammler