Excellent summary, Figleaf, but you might want to allude to the cases you had in mind.
The first case is the peacock mentioned here
. The second case I can think of is pictured below.
The unification of Spain is a complicated history starting on 19th October 1496 with the marriage of Ferdinand V of Aragon to Isabella, queen of Castilia and Léon. They brought the unification project forward with the conquest of Navarra, but couldn't finish it. Their son in law, Philip of Austria lost, rather than gained ground during his very short rule, o which no coins are known. He left a son behind and a wife, who acted strangely at times. For a number of years, Charles V of Spain reigned together with his mother, Juana la loca
. Charles was trying to forge Spain into one country, while his mother was plotting against him. However, Charles needed her for the legitimacy of his reign over Castilia.
Ferdinand and Isabella, as well as Charles and Johanna issued small silver reales using a remarkable symbol: a yoke
for two oxen. Two strong creatures pulling a heavy load. Gottit? The bundle of arrows is of course a symbol for co-operation between the feudal Spanish entities under one king.
The coin was found in the Netherlands by our metal detectorist member Bubba. It is an exceptional quality real 1497-1516 Toledo for Ferdinand and Isabella.