Patek Philippe

I own multiple Patek's, 2 of which (5085 & 5036) I keep on Orbita Bellino winders.  For whatever reason, they always lose time while on the winders which, by the way, are calibrated properly.  Should I wear one continously for a week, it runs with precision. 

I know what the common response will be ... wear them!  However, God only blessed me with 2 wrists yet cursed me with an amazing appetite for wrist watches!

Is it common for Pateks not to "behave" while being placed on a winder at length?

When you wear the watch you keep it in a certain combination of positions. When you put it down you probably put it down in a consistent position. That combination, by coincidence, results in good timekeeping. On the winder, however, the watch rests in many different positions, some of which may be less advantageous for its rate.

I have a 5085 and put it on the Oribita Bellino (the model) winder and the pr will gain a little each day when on the suggested setting.  My guess would be it would take about 2 weeks from near zero pr to wind fully.  By the way, what do you think of the 5085?  I feel this is one of the most under-appreciated watches out there.  It is understated, easy to read, great looking and the thinness and profile of this watch are super.  Never get tired of wearing it.  I would like to thank my fellow watch enthusiasts for not bidding the price too high which made me excited to buy a second one last year. 

Thanks for the feed back. 

I,too, very much like my 5085.   My 2 negatives are 1) the "mesh" style bracelet that is a bit too intricate, and 2) the dark blue back ground of the moon indicator is a bit difficult to view in contrast to the black dial.

I inherited it from my father who passed away in January of 2007.  Unfortunately, he never wore it - not even once - after I purchased it for him from the AD in Venice, Italy (when the dollar was strong vs. Euro!)   I remember my father telling me stories of buying Pateks in Zurich during the 1950's for around US$125.00.  He was apprehensive about buying a complication because he had no idea where to have it serviced in the US should it require it.  If only I knew then what I know now!!