This blog came up in todays searching. It lists quite a few armorial rolls from several centuries. One of the more interesting pictures they show has a series of carved heraldic displays that span a couple of centuries. Judging by the general artistic style, I can see a few animal head crests over mantling that may fit our time period. There are also some human figures holding weapons and what I hope is a crocodile. It probably isn't but I hope it is.
referenced on http://lalanguedublason.blogspot.com.au/2012/05/armoriaux-anciens.html as
'BARGELLO , 1354-1557 (ITA) - (=-Fumi Cambi Gado-(Francesca) Stemmi nel Museo Nazionale del Bargello , 1993)'
