Mortiz Grossmann caliber 100.2, is a hand-wound movement with a bar-shaped power reserve indicator. It consists of 227 parts including 26 jewels, of which 3 are done in screwed gold chatons. It is fitted with a Grossmann balance and a later pusher for disabling the handsetting mode and starting the movement. This Pillar movement with 2/3 plate and frame pillars is done in untreated German silver. The balance cock and escape-wheel cock are hand-engraved.