Noun
The art of working in iron.
Source: Webster's dictionaryFamous stamp collectors The stamp collection assembled by French/Austrian aristocrat Philipp von Ferrary (1850–1917) at the beginning of the 20th century is widely considered the most complete stamp collection ever formed (or likely to be formed). Source: Internet
Many consider that Count Philipp von Ferrary 's collection at the beginning of the 20th century was the most complete ever formed. Source: Internet