... that it was turned around by 180 degrees (moonphase on the buttom) and without the four digit year display. During the quartz crises both Manufactuers were holded in the former LMH group (Les Manufactures Holorgeres, not LMVH), founded from the german VDO Mannesnmann company who Günter Blümlein was the technical manager. Before they were sold to Richemont, LMH holded shares from IWC (100%), JLC (60%) and also 90% of A. Lange & Söhne. Here there was another deal from Blümlein: The A. Lange and Söhne outsize date was developed from JLC in the beginning of the 90th and the deal was, that only JLC was allowed to write the zero in the decade window, Langes first decade indication must be empty.
Cheers -Mike-