Behold the moderately exciting crown of João VI!  Crafted in 1817, the crown served as the sole royal crown of Portugal until a revolution in 1910 transformed that nation into a republic.  Made by the Portuguese royal jeweler, the crown lacks gemstones and if crafted wholly of gold, silver, iron, and velvet.  Eight half arches (which somewhat resemble octopus arms) meet at a monde (a globe like ball) surmounted by a cross.  Although the crown may not be as exciting as more ancient or ostentatious royal regalia, it forms the central decoration of the Portuguese royal coat of arms (below) which is very exciting and strange.  Two frowning spear-tongued wyverns hold up a shield (which is inexplicably wearing a crucifix necklace).  Upon the shield are seven castles and five smaller shields–each with a quincunx (five spots in an ancient Roman pattern).  The whole thing is like some weird royalist arithmetic question.