Pope, Elizabeth C.: OPINIONS IV. Philatelic Expertizing – An Inside View (1987), 244 pages + 1 page Addendum, hardcover; PLUS: Lera, Thomas / Barwis, John H. (Editors): Proceedings of the Fourth International Symposium of Analytical Methods in Philately (Nov. 2020), 102 pages, softcover; PLUS: Lera, Thomas / Barwis, John H. / Nilsestuen, Kenneth R.: (Editors): Proceedings of the Fifth International Symposium of Analytical Methods in Philately (Oct. 2023), 116 pages, softcover; PLUS: Hellrigl, Wolfgang: The A.I.E.P.-Handbook of Philatelic Expertising (2004), 320 pages, hardcover. All items in good condition. Estimate: 100 Euro
