Thanks for your kind compliments.
No trying to shill myself covertly, advertenty or inadvertently here or flip this piece now or future.
This 219J with millesimation 100/400 is the last 219 with older evolution according to Panerai.
The current evolution begin from J 101/400 onward till today.
The previous model preceeding J101/400 has embossed logo at the back while those after it has no embossing.
Also the pieces preceeding J101 /400 also have older roller where the hinge is hidden while those after it has unhidden hinge.
I have emails from Panerai to confirm.
Cheers.