For Italian members of SIM and since 2007 also for German members of Club Conchylia there is the possibility of a combined membership with the Netherlands Malacological Society (NMV). For those who choose to do so, a discount of € 2.00 is granted by their home society, as well as a € 2.00 discount for the membership rates of the NMV. Italians pay the dues for the NMV to their own treasurer, Germans pay these into account 566948540 in the name of Honorary Treasurer of the NMV at Goes. IBAN: NL51ABN0566948540, BIC: ABNANL2A.