In the 19th century when the 2 piece suit became the mainstay of gentlemen’s fashion, it occurred to well dressed men that they didn’t want their pristine handkerchiefs mixing with the coins and other dirty objects carried in their pockets and hence transferred it to their top left breast pocket.

Brustasza (niem. Brusttasche, brust 'pierś' i tasche 'kieszonka' mała kieszonka zewnętrzna w marynarce. Wykorzystywana do noszenia poszetki Często mylnie wkładany jest doń bukiecik kwiatów, który powinien znajdować się w butonierce.