This set of 12 mint stamps (three regular issue stamps and three airmail stamps; pairs plus a center inscription label of each) is the "Martyrs of Freedom" issue from Guinea. This complete set features portraits of the Rev. Martin Luther King, Jr., Pres. John F. Kennedy, and Senator Robert F. Kennedy. The retail value of this set is $21.10 (2007 Scott Standard Postage Stamp Catalogue). Each pair measures 35mm x 135mm. The scanned image (above) is 80% of actual size.