Thank you so much Cornelis! Absolutely outstanding and detailed description, and for clarifying these. My knowledge on this field is admittedly limited, and I feel lucky to have gotten that close in the hours of research before I wrote my post!!
The main thing here is learning, and its great to have this distinctly pertinant information. Very good points on the classification transcending the categories as with transition and varying makers preferences or styles, we can only broadly presume the closest application in many cases.
Regarding the marks, it is true that there is probably a great deal of unreliability in all of the resources on these as the groupings are of course compendiums taken from attributed examples presumed from certain dates and places. While many have more documented support than others, many are simply assumed, like the cross assumed a makers mark.
The information on the S is excellent, and great information on the use of silver inlay!!!
Cesare, thank you for these great entries, and please keep them coming
It really is a wonderful way to learn, from these wonderful pieces of history found in situ there in Italy.
All the best,
Jim