First Real Watch, WWW GRANA, Need Info

[Mcmike967]

Hi guy:) so ive been on here before for my grandfathers old Rolex`s and today picked up my first real watch. Ive always loved some of the old WWWs and was familiar with the rarity of the Grana. Now i have no idea if i got a great deal or lost a whole bunch.

Some of the exact info he provided
"This example is a part of a small consignment of Grana contract watches which were designated 'W.W.W specification' with white, A.T.P dials."

A comparative example is illustrated in the notable publication British Military Timepieces by Knirim, [page 553]. The serial number for the watch illustrated in Knirim's book ['M 2119'] is particularly close to the serial number of this Grana watch.

Just looking for info:) thanks so much