also playes a part here. On the skeleton models there is just no space for any..scribble..and as a consequence they are..anonymous. On the Scenziato they found some space on the inside of the bezel, on the 528 there was not even space for that I believe the Cali dial was just "accepted" like that and nobody bothered to add any...identifying...scribble. As for the 721 we all know why there was no Panerai written on the original and the re-make is the clone of that one. Pun, purity has alas become an obsolete parameter when comparing apples with pears. All I can say about a number of models, these days is: not my cup of tea