We here present the Spanish Biretta. Notably distinct from its Latin counterpart by the absence of blades and the four peaks, making it resemble a crown. This example is made using Merino wool, silk lining and a silk tassel.
A point of some interest, the approximate amount of silk thread used on this particular tassel is 1.2km. Trust us on that one, even though this is rather hard to believe. It's very fine thread. In our bored moments we like to calculate distances using tassels and other obscure measurements, cubits, furlongs etc... It passes the time.