Seiko
1971 Seiko Calculator Chronograph (Ref. 6138-7000)
Indeed, this is quite possibly the nerdiest watch out there – and we mean that in the best way. It featured an actual, fully functional slide rule bezel designed for those who needed to do mathematical calculations on the fly. How cool is that?
Aside from that incredibly unique design, this piece also features the cal. 6138 movement, which was the follow-up to the legendary 6139 and the brand's first dual register movement.
If you're looking for a watch none of your friends are going to have, this is a great contender.
SPECS
| Stock # | PT61387000 | |
| Brand | Seiko | |
| Style | Calculator Chronograph | |
| Model | 6138-7000 | |
| Serial | 1D8024 | |
| Size | Men's | |
| Material | Stainless Steel | |
| Dial | Black | |
| Millimeters | 45 | |
| Bracelet | Seiko Stainless Steel Bracelet |
CASE & BRACELET
The large stainless steel case has seen a light polish in the past and retains all of its angles and dimensions. The black Calculator bezel remains full in coloration and shows light signs of use. The case retains its original pump pushers and crown. The case back retains all of its original factory markings in crisp condition. It comes supplied on its original stainless steel bracelet.
DIAL & HANDS
The black dial shows some light patina around the markers. The lume-topped markers have aged to a dark cream colored patina. The original luminous hands match the dial perfectly and exhibit no degradation when inspected under U.V. light inspection.
ACCESSORIES
None. The watch is running and functioning correctly, though the service history is unknown. A movement service can be purchased upon request.
