Hello Trev.,
today I had a look into the reference book cited by Wikipedia.
" EN - SOLIST I SØLV: En biografi om sølvsmeden Evald Nielsen" by Chr. Rimestad, 2010.
On the page 104 the author describes the financial success of Evald Nielsen in the 20ies despite the economic depressions of that time and that this success continued through the following decades. I couldn't find any hint to personal or economical problems that might had made him retire from his business. So I am quite curious, what is the conflicting source of the information that the silversmith Evald Nielsen stopped his activities in 1931?
To enlighten the topic a mark from 1939.


Good evening
Dimi