Thank you all for providing your guesses in my previous post !
The more popular guesses were 5740 and 5968, both of which I did consider.
At the end, the enamel passion/addiction prevailed and drove me to get another 5131.
Each 5131 is unique because of the hand made enamel dial. Hence, In addition to wrist shots, comparatively photos of the different continents are posted to show how the enamelers interpret the world map on the dials.
Can you tell which is the G and which is the R ?
Overall, were you surprised by my choice to concentrate on the 5131 theme ? 
Cheers,
Gordon







R on the left
G on the top



