Each is, appropriately, adorned with a four-claw dragon on the battery cover, and theengravingprocess is rather lengthy: it involves 20 stages and takes four highly-skilled master craftsmen 36 hours, eight of which are dedicated just to the dragon's scales.
Although theprocess of transferring a musical composition from a gleam in the composer's eye into a handwritten manuscript and, finally, a performance-ready score has come a long way from the days of copper-plate engraving, it's a process rife with the possibility of transmittal error.