Phaeded wrote,

On a side-note: in none of the Petrarch-inspired fama trionfi does the allegorical woman ever hold a winged trumpet - that is unique to the CY 'World"; instead she holds a book, sword or spiritello with the winged trumpet attached to the surrounding circle which must indicate time/sphere of stars and/or the frame of the world - probably both).

Both you and Nathaniel seem to think that wings on a trumpet indicate beyond time and the world. I doubt that, since in the next triumph, fame is triumphed over by time. More likely, the wings just mean that the trumpet blast of fame is spread quickly throughout the world indicated by the circle - the mundane sublunar world, as in Boccaccio's description in Amorosa Visione of the circle around the personification of "the glory of worldly folk" - although trumpets do sometimes point upward, so spreading the news even to heaven. But even that is not heavenly fame, but rather earthly fame heard of in heaven.

In any event, the CY World is probably not influenced by these illustrations, since they are in Florence and later than the CY. The CY winged trumpet derives from the c. 1380 illustrations of Fame in manuscripts of De Viris Illustribus and probably other renderings of the lost fresco by Giotto in Milan on which these illustrations are thought to have been based. In these, it is true, Fame is not among those of her companions blowing the winged trumpet, but they are clearly in service to her, so it comes to the same thing, in a space where there wasn't room to add more figures next to her.
https://commons.wikimedia.org/wiki/Petr ... detail.jpg
https://commons.wikimedia.org/wiki/Petr ... detail.jpg
The trumpets are horizontal, so spreading the news throughout the world, not in or even to heaven. And if the trumpet on the CY card does incline upward, that may just be how she is holding it, as opposed to blowing it; alternatively, it may indicate a trajectory both to heaven and earth; but it is still not heavenly fame, but earthly fame resounding in heaven. It is fame subject to time. Whether that fame will survive the end of time is an open question.