36mm Royal Oak Automatic designed by Gerald Genta.  This watch comes complete with inner and outer boxes. I have put the watch on a timegrapher and the watch is running well with good timekeeping and amplitude. This is sized for a 6 1/2" wrist currently, links are available on eBay if you need to size it. The bracelet has some stretch, the flip lock clasp snaps closed. The crystal is free of scratches.  This watch is now listed as NO RESERVE with a low starting bid. 

The reference is 4100st. There are no papers included. 

The dial color is grey.  According to my calipers, the watch measures 35.54mm across not including crown.

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On Dec-16-14 at 08:16:37 PST, seller added the following information:

This item has been re-listed due to a non paying bidder.