About

Jan combines his analytical skills and financial expertise with deep market knowledge to help collectors make informed and secure investments. Authenticity is at the heart of every transaction. Jan invests heavily in guaranteeing the provenance of each book, ensuring that every purchase is not only secure but also truly magical. To learn more about the investment potential of rare and signed Harry Potter books, read this article.
Curious about a specific title or looking for guidance? Get in touch—we're happy to assist you in finding your next literary treasure.

Jan's dedication to authenticity is evident in his exposure of the master forger of J.K. Rowling’s signature, a revelation that led to a Prime-time documentary on Dutch national television.

This extraordinary story has garnered worldwide media attention and was also featured in a cover article in The Rowling Library Magazine.
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Winters Rare Books is located in the beautiful city of Gouda, the Netherlands.