Hi JayCee,
Juan,

A very classy heirloom to say the least. Enjoy.

Patek will have a record of your Grandfathers timepiece and a "letter" is available at http://www.patek.com/patek-philippe.html
Look for "watch maitenance" and scroll to "Extract from our Archives"
A slow website.


Good Shooting
T.C.
The Green Isle