Picked this Porche Design Lemania 5100 about 3 months ago. The last recorded service on it was +20 years ago. I'm torn between sending it off for service or letting it ride until she starts acting up. All the functions work perfectly, running about +2 seconds and day, and the registers happily reset to zero after extensive use.
I'm not a movement junkie but I have to say I'm pretty impressed with the accuracy and durability of the Lemania 5100.