Public figure
Johan Duinker Silver
Dutch bookseller and Esperantist
Johan Duinker is a Dutch bookseller and Esperantist. Born 1904 in Den Helder.
At a glance
Silver- Born
- 1904-08-16, Den Helder
- Died
- 1945-04-06, Texel
- Citizenship
- Kingdom of the Netherlands
- Occupations
- Esperantist
- Also known as
- Johannes Marinus Duinker
Personal journey
- Languages
- Dutch, Esperanto
Due diligence
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What we have, and what we might have wrong
This page is assembled from the sources below. Each section carries its own grade. Silver 1 section
- Wikidata, as of 3 Oct 2026. Community-curated knowledge base (CC0)
Last rebuilt 3 Oct 2026. We may be wrong: names get matched to the wrong record, people change jobs, companies change status. What gets seen and reported gets fixed. How grades work.