two matching original late 19th century american antique ornamental cast iron office door reliance building loose pin hinges with ball finials

custom-designed "german silver" plated cast bronze marquette building interior office doorknob backplate and matching hinges with neogrec design motif

rare museum quality ornamental cast iron louis sullivan-designed guaranty or prudential building interior office door "letters" slot and matching chute with bower-barff finish

original historically important nicely aged holabird and root-designed pontiac building interior office monogrammed doorknob with rope border

group of original nickel plated c. 1930 machine age art deco cast bronze chicago board of trade interior trading room diminutive doorknobs with matching backplates

lot of four matching original nickel plated machine age art deco cast bronze chicago board of trade interior trading room office door handles with concentric rings

highly sought after original and intact nicely aged banded rim 1886 chicago city hall and county building emblematic doorknob designed by architect james egan

original historically important ornament cast bronze gothic style interior monogrammed backplate and matching doorknob from cass gilbert's new york city woolworth building

original and intact victorian era antique american cast bronze figural portrait doorknob and matching escutcheon with swinging keyhole cover fabricated by the metallic compression casting company

hard to find late 19th or early 20th century adler and sullivan auditorium building hotel guestroom nickel-plated brass door key with customized fob

matching original 19th century interior fisher building office door ornamental cast iron monogrammed escutcheon and figural doorknob

original ornamental cast iron c. 1904 neo-classical style interior railway exchange or sante fe building office door doorknob and matching backplate

super streamlined style original chicago board of trade building interior office door nickel-plated bronze hardware consisting of concentric ring doorknob and rectangular-shaped backplate

original 1890's complete old colony building interior office door matching monogrammed doorknob lockset comprised of brass with nicely aged surface patina

hard to find c. 1893 original unsually-shaped william le baron jenney-designed isabella building fleur-de-lis pattern cast bronze doorknob

classic and dignified original c. early 20th century ornamental cast brass blackstone hotel guest room door hardware

large lot of original late 19th century ornamental cast iron interior historic fisher building monogrammed office door backplates in various old finishes

large lot of hard to find all original c. 1894 ornamental cast iron sullivan-designed chicago stock exchange window sash pulls with bower-barff finish

original c. 1895 ornamental cast iron chicago stock exchange building monogrammed interior office door backplate or escutcheon with bower-barff finish

rare and original antique c. 1920's cast brass doorknob fabricated by the sargent hardware company for holabird and roche's palmer hotel

early 20th century antique american industrial stamped yellow brass "8th floor" reliance building chieg engineer master office door key ring with lightly incised markings

very rare all original c. 1931 historically important interior lobby art deco streamlined style new york city chrysler building nickel-plated cast bronze doorknob

late 19th century long and narrow oversized antique american cast bronze cleveland commercial building "push" backplate with bas-relief lettering