The supplied evidence (Millon’s own announcement and multiple independent news outlets) shows that Millon opened a public exhibition of Brigitte Bardot’s personal items at Hôtel Drouot on 15 September 2026 (displayed 15–20 Sept), while the auction itself was scheduled to take place on 21 September 2026. None of the provided sources report that Millon ran an auction or offered any lots for bidding on 15 September; that day was the start of the preview/exhibition, not a sale. Therefore Millon did not run a sale or publicly offer lots for bidding on 2026-09-15.