Lot 20285 - 1936–53 Instructional Markings: Selection of six covers to and from Cyprus, illustrating a range of scarce auxiliary postal markings, including boxed "INSUFFICIENTLY PAID" handstamps in black (2), boxed "RETOUR" in red,

1936–53 Instructional Markings: Selection of six covers to and from Cyprus, illustrating a range of scarce auxiliary postal markings, including boxed "INSUFFICIENTLY PAID" handstamps in black (2), boxed "RETOUR" in red, unframed linear "UNKNOWN", blue "UNCLAIMED R.L.O.", and boxed "NON RÉCLAMÉ". A very fine and attractive group of Returned Letter Office and instructional markings. (6)