1. PIETRO DE MEDECIS iMPRESE
About the birthtray for Pietro de Medicis son birth, Lorenzo and the use of Stemma and imprese, Steve gave a documented Link http://www.academia.edu/30183941/Herald ... _Patronage
"It should be noted that Cosimo did not have a personal device as they do not appear until his son1s generation. AMES LEWIS 126 128"
"The armorial device is that of Lorenzo de’ Medici’s father, Piero de’ Medici: a diamond ring with three ostrich feathers and a banderole with the motto SEMPER (forever). The device is much worn and the silver is oxidized. Piero de’ Medici married Lucrezia Tornabuoni in 1444 and their first son, Lorenzo, was born in 1449; the two families’ coats of arms are in the upper left and right. The tradition of commissioning circular trays or salvers to commemorate a birth derived from the custom of presenting sweetmeats to the new mother"
2. COSMO DE MEDICIS THE ELDER STEMMA
The 8 Palles Medicis Stemma on the Reverso of The Triumph of Fame c 1449 Impresa of the Medici Family and Arms of the Medici and Tornabuoni Families by Massacio brother, Giovanni di ser Giovanni Guidi (called Scheggia) (Italian, San Giovanni Valdarno 1406–1486 Florence) are those, I think, of Cosimo the Elder - Head of the family.
3. PIETRO DE MEDICIS STEMMA
For the psChVI Charioter, the first rows of Stemma's with 7 Palles without Fleur de Lys would be those of Pietro de Medicis before May 1465
High speculative nota :
Amongst the virtues, Temperance 's dress is also orned with flower (?) motifs kind of similar to the 7 Palles ...
The same textile repeating the Medicis pattern is on the Chariot immediately below the first rows of the 7 Palles of the Charioter.
Now, if my correspondence between the flower motifs of the dress of the female figure of Temperance and the Medicis Palles motif is anything more than mere speculation , this kind of "textile" for women repeating Medicis motifs as ornement could be the allusion present in the very simple dress of Temperance repeating the Stemma in the psChVI Tarot.
There is one example of this later on in 1492 but only a fragment much more elaborated and complex is left :
"Though we cannot be sure of the original dimensions of the textile, it was probably woven as a long border, with a repeating pattern of the Medici device, which may have alternated with other symbolic emblems relating to the family. A valuable textile such as this, specifically woven for the Medici family, would most likely have been reserved for use during important family events, such as marriages, or used on an important piece of furniture, such as the best bed in the household or a canopy covering a ceremonial chair. The device of the three feathers encircled by the ring above the motto SEMPER was used to decorate a variety of objects; other examples include a maiolica bowl, horse trappings, and ceremonial headgear"
So, if the speculation has any ground, this could explain the presence of this simple and protype textile repeating the Medicis Stemma either covering the Chariot or covering Temperance...as on the psChVI Charioter and Temperance...
4. As suggested, Scheggia is a plausible candidate for the psChVI paintings for the : http://trionfi.com/evx-lo-scheggia