Back again towards the ornamental aspects of this openwork splendor. There's a modest cranium engraving set atop the tourbillon, which echoes the skulls we've seen in previous RM designs. The indices could be mistaken for joint sockets, or tiny newborn enamel. Seems they are meant to be guitar plectrums. As https://alexiszeewm.blogthisbiz.com/34517282/about-rm66