In 1970 A. M Beck founded in Muinch the `` Organisation of European Coins-Bourses '' , `` Organisation EuropÃ ischer MÃ 1\/4 nzen-B Ã rsen '' ( OEMB ) in German . In 1970 A. M Beck founded in Munich the `` Organisation of European Coins-Bourses '' , `` Organisation EuropÃ ischer MÃ 1\/4 nzen-B Ã rsen '' ( OEMB ) in German .