# Watchiologist > Watchiologist (watchiologist.de) is a curated vintage and luxury watch reseller based in Hamburg, Germany. Founded by Nassiem Al-Sheikh, a horologist with 9+ years of collecting experience, the shop offers approximately 190 authenticated pre-owned timepieces from 21+ premium brands. Prices range from ~EUR 500 to EUR 17,000+. Every watch comes with an in-house certificate of authenticity and a 12-month warranty. Watchiologist ships worldwide with insured, discreet packaging and offers personal consultations, including in-person viewings in Hamburg. The site is in German and primarily serves the DACH region (Germany, Austria, Switzerland). Watchiologist specializes in vintage and pre-owned luxury watches that have been carefully inspected and authenticated. The business operates on Shopify and accepts standard European payment methods. Customers can also sell or trade in their watches through the Uhren-Ankauf (watch purchase) program. The site features an educational blog with serial-number dating guides for Rolex, Omega, Breitling, and Seiko, as well as brand history articles and collecting advice. ## Core Pages - [Homepage](https://watchiologist.de/) - [All Watches](https://watchiologist.de/collections/watches) - [In-Stock Watches](https://watchiologist.de/collections/uhren-in-stock) - [About / Uber Mich](https://watchiologist.de/pages/uber-mich) - [Contact](https://watchiologist.de/pages/contact) - [Watch Purchase / Sell Your Watch (Uhren-Ankauf)](https://watchiologist.de/pages/uhren-ankauf) - [Blog](https://watchiologist.de/blogs/news) ## Brand Collections - [Rolex](https://watchiologist.de/collections/rolex) - [Omega](https://watchiologist.de/collections/omega) - [Cartier](https://watchiologist.de/collections/cartier) - [Breitling](https://watchiologist.de/collections/breitling) - [Tag Heuer](https://watchiologist.de/collections/tag-heuer) - [Seiko](https://watchiologist.de/collections/seiko) - [Patek Philippe](https://watchiologist.de/collections/patek-philippe) - [Audemars Piguet](https://watchiologist.de/collections/audemars-piguet) - [IWC](https://watchiologist.de/collections/iwc) - [Tudor](https://watchiologist.de/collections/tudor) - [Hublot](https://watchiologist.de/collections/hublot) - [Panerai](https://watchiologist.de/collections/panerai) - [Jaeger-LeCoultre](https://watchiologist.de/collections/jaeger-lecoultre) - [Piaget](https://watchiologist.de/collections/piaget) - [Hamilton](https://watchiologist.de/collections/hamilton) - [Maurice Lacroix](https://watchiologist.de/collections/maurice-lacroix) - [Zenith](https://watchiologist.de/collections/zenith) - [Blancpain](https://watchiologist.de/collections/blancpain) - [A. Lange & Sohne](https://watchiologist.de/collections/a-lange-sohne) - [Glashutte Original](https://watchiologist.de/collections/glashutte-original) - [Tissot](https://watchiologist.de/collections/tissot) ## Tools & Resources - [Watch Serial Number Lookup](https://watchiologist.de/pages/watch-serial-lookup): Free tool to determine the production year of a Rolex, Omega, Seiko, or Breitling watch from its serial number. Supports Rolex letter codes (1987–2010), Omega Speedmaster vs. other Omega models, Seiko YMxxxxxx format with caliber-based decade narrowing, and Breitling chronograph vs. non-chronograph distinction. Includes 60+ Seiko caliber-to-year mappings (e.g., 7S26 → 1996–2011, 6309 → 1976–1988, 9F62 → 1993–present). - [Watch Dating Tool (Overview)](https://watchiologist.de/pages/uhr-datieren): Educational overview of dating methods for vintage and luxury watches. - [Newsletter Sign-Up](https://watchiologist.de/pages/newsletter-abonnieren-und-als-erstes-uber-deals-blogs-erfahren) ## Other Products - [Watch Posters / Wall Decoration](https://watchiologist.de/collections/poster) - [Collectibles](https://watchiologist.de/collections/collectibles) - [Sold Watches Archive](https://watchiologist.de/collections/verkaufte-uhren) ## Optional - [Blog: Serial Number Dating Guides](https://watchiologist.de/blogs/uhr-datieren) - [Blog: Watch History & Reviews](https://watchiologist.de/blogs/news) - [Full AI Documentation](https://watchiologist.de/pages/llms-full-txt): Extended version with complete brand catalog, FAQ, buying guides, and expertise details