group of four matching finely detailed late 19th century richardsonian romanesque style "florence" pattern interior residential passage size doorknobs. fabricated by the p. & f. corbin co., new britain, ct. the highly stylized doorknob features an allover acanthus leaf design motif. nicely aged, surface patina. measure approximately 2 1/4 inches in diameter. priced for the lot. salvaged from a chicago graystone undergoing demolition.