Bidspirit auction | United States - Modern Errors
United States - Modern Errors and Varieties - 2005, Modern Architecture, 37c multicolored, self- adhesive se-tenant pane of 12, orange yellow color omitted on three stamps of the 2nd vertical row, backing paper intact, VF, C.v. $400, a common pane is included, Est. $200-$250, Scott #3910m