# kuenker — Künker hammer prices

Fritz Rudolf Künker, Osnabrück — Europe's largest coin auction house; every past lot keeps a static product page with estimate and hammer price (EUR).

• Engine: api (static HTML), Firecrawl fallback. Discovery through sitemap.xml → sitemap-products-<n>.xml (29 × 25 000 URLs). /widgets/ (JS listings) is robots-disallowed and never used.
• Flow: cursor { sitemapIndex, urlIndex } → lotsPerRun lot pages per run → one raw record per lot page.
• Records: sale when a hammer price is printed (buyerPremiumIncluded=false), sale date = date on the page, estimate/mint/rarity/references in metadata, grade + certification from the Condition property (PCGS/NGC slab (pcgs#.grade/cert)), identifiers.kuenker_product_id, pcgs_number, <grader>_cert.
• Lookup: any kuenker.de/<slug>/<id> URL via seeds.
• Smoke: pnpm tsx connectors/api/kuenker/_smoke.ts 2