Seiko Monaco 7016-5000 From November 1972
 
The 7016 is a really special caliber as there were only Pateks and Omegas that featured the stacked registers. Even then, Patek only launched theirs in the mid 2000’s. This meant that the 7016 is most likely the first chronograph to feature such a counter, and that Seiko was way ahead of its time in watch technology. 
 
The 7016 was also a flyback chronograph! 
 
There was also a slight difference in how the register hands moved between caliber 7016 and 6138/9. Both calibers had a sweeping 12-hour register hand, but only the former had a sweeping 30-minute register hand. The 6138/9 calibers had a minute register hand that changed on the minute. This made caliber 7016 even more intriguing to me as it was a deviation from the ‘norm’, where minute registers jumped.
 
The day/date window on watches housing the 7016 tended to have a beveled edge date window. This added a nice touch as more work went into the dial. The more important difference was with how the date was changed. To change the day, the crown had to be pushed in (-1 position), with each push setting the day further down the week. The date was changed conventionally with the crown in the first pull. This unique date setting mechanism made me even more intrigued about this movement.
 
All original: dial, hands, lume, pushers & crown, 
 
Seiko Bracelet, fitting a 7.5”wrist. 
 
The case is very sharp, unpolished, original factory brush finishing is still visible very well, There are a few thin scratches on body, crystal. Case size is big: 36.5mm horizontal (flushed crown) + 34.6mm vertical (without lugs)