Complex sentence: Originally from Alsace but living mosting in Switzerland, he was also a deputy in the French parliament in the 1930s and his stamp collection was considered one of the greatest ever assembled featuring some of the world's most valuable and rarest stamps.
Split into simpler sentences: Originally from Alsace but residing in Switzerland, he was a deputy in the French parliament during the 1930s. His stamp collection was considered one of the greatest ever assembled featuring some of the world's most valuable and rarest stamps.