Koch probably owned the largest Old Germany collection that had been put together up to that point
Negri Sembilan
November 1950
documentation of the Helga and Erivan Haub collection outside the 'Edition d'or' series
schönes Angebot ungebrauchter Hermes-Köpfe mit vielen Einheiten
Corinphila, Auktion 142, 2005-01 'Kuphal', Hamburg AUT-Voyce Koch probably owned the largestCorinphila, 'Hansestadt Hamburg', Edgar Kuphal Collection, 142nd auction, Zurich, 15. 01. 2005, luxury catalogue with numerous coloured illustrations, 526 lots, 155 pages, the dust jacket with scratches and creases, the paper has slight edge toning, small edition, the catalogue was only issued against a high subscription, complete with results list (COPY) #72101