Hi all,
On the topic of dating Tommasini's (one I feel would be perfect to start its own thread), I've just posted a translation of an Italian article from 1987 regarding the introduction of Marble paint styles...
https://rorymasini.blogspot.com/2017...nt-dating.html
I hope someone finds this useful. I agree with the frame fittings being sometimes difficult to pin something down, but based on others' insights, I think graphics and paint styles offer further clues if we can just get more info out there like this.
PS - to make a long read short... marble started in '87, just as T-Mar says.