
by Jaap Geraerts, Henry Keazor, Demival Vasques Filho, Rebecca Welkens and Thorsten Wübbena This clear call for secrecy and discretion can be found as a kind of prologue in issues of the so-called ‘Mittheilungen des Museen-Verbandes’, which were published from 1899 to 1939. 2 They were distributed by the “International Association of Museum Officials in Defence Against Counterfeiting and Improper Trade Practices” (“Internationaler