Nice Seikosha signed mechanical movement (19 Jewel / Cal.560).

 

Case back signed with flying 'Crane' symbol indicating production at the Kameido factory in Tokyo and CW below model and serial number for 'Crown'. 

20 micron gold plated case has survived well with some wear to plate at lugs, signed crown. 

Watch winds and runs strongly (not accuracy checked). Dial presents well, applied hour markers all in good order as are hands and sweep seconds hand.

This is a keeper for any collector.