{"current_listings":[{"buy_url":"https://birkinbagstock.com/go/janefinds-11481560580399","currency":"USD","detail_url":"https://birkinbagstock.com/listing/janefinds-11481560580399","id":"janefinds-11481560580399","merchant":"JaneFinds","price":15000,"title":"Herm\u00e8s Kelly 28 Sellier Noir Box Calf Gold Hardware"},{"buy_url":"https://birkinbagstock.com/go/prive-porter-39759649669186","currency":"USD","detail_url":"https://birkinbagstock.com/listing/prive-porter-39759649669186","id":"prive-porter-39759649669186","merchant":"Priv\u00e9 Porter","price":36000,"title":"Herm\u00e8s 28cm Kelly Sellier Black Box Calf Leather Gold Hardware"},{"buy_url":"https://birkinbagstock.com/go/prive-porter-40554937778242","currency":"USD","detail_url":"https://birkinbagstock.com/listing/prive-porter-40554937778242","id":"prive-porter-40554937778242","merchant":"Priv\u00e9 Porter","price":36000,"title":"Herm\u00e8s 28cm Kelly Sellier Black Box Calf Leather Palladium Hardware"},{"buy_url":"https://birkinbagstock.com/go/bagista-SOR7146","currency":"USD","detail_url":"https://birkinbagstock.com/listing/bagista-SOR7146","id":"bagista-SOR7146","merchant":"Bagista","price":18999,"title":"Herm\u00e8s Kelly 28 - Black Box Calf | Gold Hardware"}],"data_url":"https://birkinbagstock.com/data/price-history/kelly-28-black-box-calf.json","filters":{"color":"Black","leather":"Box Calf","size":28,"sort":"newest","style":"kelly"},"generated_at":"2026-09-04T06:54:23.562726+00:00","history":{"change":0,"change_label":"$0","change_pct":0.0,"current_listings":4,"data_url":"/data/price-history/kelly-28-black-box-calf.json","direction":"flat","events":[],"first_date":"2026-09-04","first_median_price":27500,"first_median_price_label":"$27,500","history":[{"date":"2026-09-04","day":"20260904","max_price":36000,"max_price_label":"$36,000","median_price":27500,"median_price_label":"$27,500","min_price":15000,"min_price_label":"$15,000","sample":4}],"history_url":"/price-history/kelly-28-black-box-calf","label":"Birkin 28 Black Box Calf","last_date":"2026-09-04","last_median_price":27500,"last_median_price_label":"$27,500","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":1,"sample_listings":4,"slug":"kelly-28-black-box-calf","status":"one_point","summary":"Birkin 28 Black Box Calf median first captured at $27,500 on 2026-09-04."},"license":"Public citation dataset. Attribute BirkinBagStock.com and verify merchant prices before purchase.","slug":"kelly-28-black-box-calf","source":"BirkinBagStock.com","title":"Kelly 28 Black Box Calf \u2014 Live Inventory Across Verified Resellers","url":"https://birkinbagstock.com/price-history/kelly-28-black-box-calf"}