JAMES ISIDOR KAISER (Brilon 1890-Copenhagen 1965), entrepreneur, Berlin, Copenhagen. 

James Isidor Kaiser was born on May 6, 1890 in Brilon, North Rhine-Westphalia, the son of Arthur Kaiser and Mathilde Kaiser (née Steinberg). In October of 1912, at the age of twenty two, Isi was sent by his employer, Salomon Brothers & Co (a paper manufacturer), to the United States where he was mainly based in New York during his eight-year stay. After his return to Berlin, he founded Darag Deutsch-Amerikanische Rohstoff-Gesellschaft in 1922, which also dealt paper.

Throughout his life, Isidor showed great interest in old masters, antiques and silverware and built a formidable collection before WWII. With the outbreak of WWII in 1939 Isidor Kaiser immigrated to Denmark and continued to grow his vast collection until his death in Copenhagen on September 3, 1965, aged 75.

He bequeathed his estate to his two remaining siblings who resided in Israel. His beneficiaries sold most of the estate at 2 auctions:

1. Arne Bruun Rasmussen, Copenhagen, Auction no. 191, Mar 22, 1966 

2. Hausewedell, Hamburg, Auction no. 144, May 21, 1966

The remainder of the estate was sent to Israel to be divided amongst his 2 heirs.