SEIK O CRYSTAL CHRONOMETER QC-951 Seiko, Japan, 'Crystal Chronometer QC-951', No. 10637, Made in the later 1960s. Fine quartz, electronic, center-seconds chronometer. Accompanied by the original fitted box. | Important Modern &
Seiko Crystal chronometer, (type QC951=11 S/no 10315), the 5... in United Kingdom