1872 (Dec 23) Chicago, Ill. to Brussels, Belgium, clean cover bearing 1870, 10¢ brown tied by fancy grid duplexed with "Chicago Dec 23" cds, red "New York Paid All Br. Transit Jan 1" exchange cds, letter carried by Guion Line Wisconsin that departed New York Jan. 1 and arrived Queenstown on Jan. 11, Brussels arrival backstamp, Extremely Fine, letter prepaid for the 10¢ Belgium closed mail rate. Estimate  $200 - 300. $0 (Image)