More Than Just Mail: Postcards and the Online Auctioneer

Postcard collectors own bite-sized pieces of history. The relationships unraveled in scrawling notes, the intricacies of society filtered through a contemporary gaze, the stories told through post marks, and the constant motion of an era stagnated by the passage of time---postcards give life back to time lost.

Though these collections rival stamps in terms of their desirability, postcard collections have intricate value systems that can add significant value for your consignor. To find value in a collection of postcards, sellers need to know where to look. 

1. How Old Is It?

The older the postcard, the more likely it is to be valuable—especially ones from the late 1800s to early 1900s. Collectors love cards from what's called the “Golden Age of Postcards” (around 1898 to 1918). They’re like little time capsules!

2. Is It Rare?

Some postcards were only printed in small batches, came from off-the-beaten-path places, or were discontinued quickly. That kind of scarcity can drive up their value. And if there’s a printing error or unusual detail? Even better—collectors love quirky finds.

3. What Shape Is It In?

Condition really matters. Cards that are clean, crisp, and free of creases, stains, or writing usually fetch more. But don’t toss the written ones! If they’re in good shape and have an interesting message or story, they can still be worth something.

4. What’s on It?

The subject matter can make a big difference. Think:

-Landmarks that have changed or disappeared

-Major events like parades, disasters, or political rallies

-Old-school transportation (vintage trains, ships, early airplanes)

-Or beautiful artwork from known illustrators or photographers

Visually striking or historically significant compositions will always add value.

5. Any Interesting Postmarks or Messages?

Unusual postmarks—especially from towns that no longer exist or special events—can make a postcard more collectible. And if there’s a handwritten message that gives a glimpse into the past? That personal touch can make it even more special.

Written by:

Juli Dupont

September 16, 2025     

Juli is the customer success guru at AuctionNinja, specializing in helping sellers achieve maximum success on the platform. With a background in the estates and acquisitions department at AuctionNinja's parent company, BRG, Juli possesses a deep understanding of the challenges and dynamics of the auctioneering and estate selling industry. Her expertise makes her the go-to person for sellers navigating the ever-changing marketplace. Juli holds a Bachelor of Arts degree in English.

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