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Collector support

Frequently asked questions

Answers for visitors, buyers, bidders, and sellers.

How are pieces verified?

Each listing shows its authenticity tier, evidence reviewed, condition notes, provenance, and specialist review.

Can I inspect an item in person?

Eligible pieces offer private viewing appointments with confirmed dates and venue details.

How does extended bidding work?

A bid placed near closing may extend the auction by the interval shown on the auction page, giving others time to respond.

How do I sell an item?

Submit an appraisal with the item story, condition, photos, and any authenticity documents. You will receive a reference number and status updates.