{"current_listings":[{"buy_url":"https://birkinbagstock.com/go/fp-1975698","currency":"USD","detail_url":"https://birkinbagstock.com/listing/fp-1975698","id":"fp-1975698","merchant":"Fashionphile","price":10295,"title":"Herm\u00e8s Swift Toile Constance 24 Bleu Saphir Black Ecru"},{"buy_url":"https://birkinbagstock.com/go/madison-avenue-H-C-251208-1-YB","currency":"USD","detail_url":"https://birkinbagstock.com/listing/madison-avenue-H-C-251208-1-YB","id":"madison-avenue-H-C-251208-1-YB","merchant":"Madison Avenue Couture","price":18500,"title":"Herm\u00e8s Pre-owned Hermes Constance 24 Toile De Camp D\u00e9cha\u00een\u00e9e and Black Swift Palladium Hardware"},{"buy_url":"https://birkinbagstock.com/go/madison-avenue-H-C-260812-2-MP","currency":"USD","detail_url":"https://birkinbagstock.com/listing/madison-avenue-H-C-260812-2-MP","id":"madison-avenue-H-C-260812-2-MP","merchant":"Madison Avenue Couture","price":12000,"title":"Herm\u00e8s Pre-owned Hermes Constance 18 Black Swift Marbled Palladium Hardware"}],"data_url":"https://birkinbagstock.com/data/price-history/black-swift-constance.json","filters":{"color":"Black","leather":"Swift","sort":"newest","style":"constance"},"generated_at":"2026-09-24T02:07:11.163560+00:00","history":{"change":0,"change_label":"$0","change_pct":0.0,"current_listings":3,"data_url":"/data/price-history/black-swift-constance.json","direction":"flat","events":[],"first_date":"2026-09-24","first_median_price":12000,"first_median_price_label":"$12,000","history":[{"date":"2026-09-24","day":"20260924","max_price":18500,"max_price_label":"$18,500","median_price":12000,"median_price_label":"$12,000","min_price":10295,"min_price_label":"$10,295","sample":3}],"history_url":"/price-history/black-swift-constance","label":"Birkin Black Swift","last_date":"2026-09-24","last_median_price":12000,"last_median_price_label":"$12,000","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":1,"sample_listings":3,"slug":"black-swift-constance","status":"one_point","summary":"Birkin Black Swift median first captured at $12,000 on 2026-09-24."},"license":"Public citation dataset. Attribute BirkinBagStock.com and verify merchant prices before purchase.","slug":"black-swift-constance","source":"BirkinBagStock.com","title":"Constance Black Swift \u2014 Live Inventory Across Verified Resellers","url":"https://birkinbagstock.com/price-history/black-swift-constance"}