Google Street View, 120 Rue du Bac, July 2016
Fortunately this magnificent door knocker, partially painted red, appears to still exist in the wild.
Google Street View, 43 Rue Sainte-Anne
Sadly the magnificent door knocker in Eugène Atget’s (1857-1927) beautiful albumen photograph, made 115 years ago, appears to no longer exist in nature. (Although the replacement is not too shabby.)