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90326204"}],"data_url":"https://birkinbagstock.com/data/price-history/birkin-30-black-box-calf.json","filters":{"color":"Black","leather":"Box 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30 Black Box Calf","last_date":"2026-06-21","last_median_price":53000,"last_median_price_label":"$53,000","methodology":"Spec history uses daily captured prices for the current visible cohort of live listings. The median series is descriptive asking-price intelligence, not an appraisal or completed-sale index.","observations":23,"sample_listings":6,"slug":"birkin-30-black-box-calf","status":"ok","summary":"Birkin 30 Black Box Calf median ask is unchanged since 2026-05-30."},"license":"Public citation dataset. Attribute BirkinBagStock.com and verify merchant prices before purchase.","slug":"birkin-30-black-box-calf","source":"BirkinBagStock.com","title":"Birkin 30 Black Box Calf \u2014 Live Inventory Across 12 Merchants","url":"https://birkinbagstock.com/price-history/birkin-30-black-box-calf"}