Back into the ornamental components of this openwork splendor. There is a smaller skull engraving established atop the tourbillon, which echoes the skulls we have seen in past RM layouts. The indices might be mistaken for joint sockets, or tiny toddler enamel. Seems they are supposed to be guitar plectrums. https://rm6687383.blazingblog.com/28541272/the-2-minute-rule-for-rm66