| 2018 | Károly Szücs, Hungary for Fiscal Philately of Hungary |  |  |
| 2017 | Brian Trotter, United Kingdom for Southern African Mails, Routes, Rates and Regulations 1806 - 1916 |  |  |
| 2016 | Ari Muhonen (chief researcher), Finland for Finnish postage rates 1875 - 2001 The co-authors of this research: Harri Ala-Honkola, Hannu Kauppi, Juhani Kerppola, and Esko Seitsonen will receive a Certificate. |  |  |
| 2015 | Michele Chauvet, France for Les tarifs helléniques des lettres internationales 1861-1878 |  |  |
| 2014 | Frank Walton, United Kingdom for The La Rue Collection, vol. 1 to 6 |  |  |
| 2013 | Stephano Calliga, Greece for The Stamps of the Large Hermes Heads 1861-1886 |  |  |
| 2012 | Luis Virgilio De Brito Pereira Frasâo, Portugal for Pre- Filatelia Portuguesa. Marcas postais utilizados em Portugal continental na época pré-adesiva (1799/1853) |  |  |
| 2011 | Wolfgang Maassen, Germany for From the First Albums and Catalogues to Publishing Houses of Global Standing |  |  |
| 2010 | Patric Maselis (Editor and co-author), Belgium for Catalogue of MonacoPhil 2009 The co-authors of this research: Messrs Stes, Delbeke, Schouberects, Tavano, Huys, Kaiser, Van Pamel and Slabbinck. |  |  |
| 2009 | Nino Aquila and Francesco Orlando, Italy for Sicilia – I timbri del Nuovo Re (Sicily – the postmarks of the new King) |  |  |
| 2008 | Mario Mentashi and Thomas Matha for Letter Mail from and to the Old Italian States 1850-1870 |  |  |
| 2007 | Michele Chauvet and Jean Francois Bruun for Introduction a l’histoire postale de 1848 a 1878 |  |  |
| 2006 | Bruno Crevato-Selvaggi, Italia for Il Regno d’Italia |  |  |
| 2005 | Patric Maselis, Belgium for From the Azores to New Zealand |  |  |