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Introduction to Estimates and Consignment

Many specialty auction houses, galleries, and consignment firms offer free ballpark auction estimates for high-quality antiques and collectibles. These estimates are typically provided as part of the consignment process, helping auction houses identify items that may be suitable for future sales.

However, ballpark estimates are generally not intended for estate settlements, insurance coverage, tax matters, charitable donations, or other formal valuation purposes.

For additional information about auction estimates, see this informative PBS Antiques Roadshow article 🔗.

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Verify Specialist Credentials

Accurate estimates require highly specialized knowledge.

Before sharing personal information or requesting an opinion, review the specialist's credentials, reputation, and customer feedback within your item's category.

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Obtain Multiple Opinions

Many experts recommend obtaining estimates from more than one specialist.

Comparing multiple opinions can help you identify market trends, better understand value ranges, and make a more informed decision before committing to a consignment or sale.

A single estimate should generally be viewed as one professional opinion rather than a definitive statement of value.

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Understand Fees and Consignment Terms

Before consigning an item, carefully review the auction house's fee structure.

This may include seller commissions, buyer's premiums, photography fees, insurance charges, transportation costs, or other expenses that can affect your final proceeds.

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The Importance of Provenance

An item's history, ownership records, and supporting documentation—commonly known as provenance—can significantly influence both its estimated value and final selling price.

Gather and organize any relevant receipts, photographs, certificates, letters, or historical records before seeking an evaluation.

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Do Not Clean, Polish, Repair, or Modify

In many cases, originality is one of the most important factors affecting value (learn more).

Removing an original patina, refinishing a surface, replacing parts, or performing repairs without expert guidance can significantly reduce the value of certain collectibles.

Before cleaning, polishing, repairing, or modifying an item, consult reputable specialists in that category.

Tip: If you plan to have an item evaluated, bring it in its current condition whenever possible.

Even seemingly minor actions—such as dusting, polishing, or removing surface residue—may eliminate evidence of age, authenticity, or provenance that specialists consider important.

Let the specialist recommend any preservation, cleaning, or restoration steps after the evaluation.

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Select the Right Auction House

Not all auction houses specialize in the same categories.

Consider the firm's expertise, reputation, marketing reach, past sales results, commission structure, and experience with items similar to yours before deciding where to consign.

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Stay Informed About Market Trends

Markets change over time.

Following respected auction houses, industry publications, trade organizations, and specialty collectors can help you better understand current demand, pricing trends, and emerging areas of interest. 

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Legal and Insurance Considerations

Review consignment agreements carefully and understand your responsibilities before signing.

You should also confirm whether your item is insured during shipping, storage, exhibition, and the auction process, and whether additional coverage may be appropriate.

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Further Resources

For additional information about auction estimates, specialist verification, provenance, consignment, and related topics, explore the resources referenced throughout this guide.

A basic understanding of auction practices and market trends can help you make more informed decisions and maximize the potential value of your collectibles.

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Page Notes

Last updated: June 10, 2026

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