# 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`