Items are photographed and then cataloged to an online auction platform like AuctionNinja, known for its specialization in estate sales.

Through this listing process, 21st Century Antiques can include multiple photos of each item, along with a detailed description. While some items may have a set starting price, many are listed without one. This approach effectively sparks bidding activity, creating early competition and ultimately driving up sale prices.

The online platform ensures that listings are accessible 24/7, catering to a wide range of shoppers. Any inquiries can be promptly addressed via email. From fine art, jewelry and furniture to couture clothing, collectible coins and kitchenware, a diverse array of items can be sold in these online estate auctions. Shipping options are available for some items, while others may be picked up locally.