Not a real Turtle of course! I recently received a Seiko 6309-7040 that the owner said was losing a bit of time and had a very stiff bezel, in addition to needing a service. First thing to do is inspect it for any obvious damage, all is good and this is in very nice condition for its age, DOM January 1981, so 38 years 8 months old. Next is to get a couple of shots of the watch. As you can see, it has a nice original SUWA dial in good condition, nicely faded lume and very minimal corrosion on the hands. A quick check on the Timegrapher (default settings) just to see what the situation is. Well that isn't a good sign. Maybe magnetised? Three passes over the demagnetiser and onto the winder for 12 hours to get some power in the mainspring. Another run on the Timegrapher and not really much difference. To check actual time (we know the Timegrapher says it's losing minutes per day) I set it to my GPS controlled Citizen quartz and let it run for 24 hours. Needless to say, losing about 16 minutes a day isn't a good sign so next I'll open it up and check for any obvious problems/damage. Nothing to see here, not even signs of a previous service (unless the watchmaker was very careful about scratching screw heads). For the next step, I'll disassemble it and inspect the parts before cleaning. But that'll have to wait as it's beer o'clock here so I'll finish off until the next instalment.