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People often purchase collectibles with the hope they will increase in value. But, as with any speculative investing, putting your money into vintage toys, collectible cards, figurines or classic vehicles carries a risk of loss.

If you have any of the following popular collectibles, you might want to consider selling them now. Some experts predict that these collectibles will plummet in price by the end of this year.

In contrast, here are some collectibles expected to soar within the next few years.

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Some sources states that Star Wars action figures by Kenner from the 1970s and 1980s may decrease in value as Gen Xers seeking to clear clutter try to sell these toys from their childhood.

Plus, the website JediTempleArchives.com analyzed viewer data for the Hasbro Pulse livestreams of its most popular properties. Star Wars lagged behind Marvel, Transformers and even G.I. Joe.

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The younger generation doesn’t have as much interest in Star Wars. And for fans of the series, today’s action figures depicting the science fiction classic are much better looking. “Loose stuff won’t have any appeal to younger generations,” said user Seroquel in the Rebelscum.com forum. “It’s a lot easier to just dump a big collection of sticky old action figures in the dumpster than trying to sell them on eBay.”

Of course, some exceptions exist, including one-off, mint condition collectibles and high-value items, according to an article on BBC.com.

“Classic car values, you generally expect them to keep going up,” said Shahzad Sheikh, known as the Brown Car Guy, in a YouTube video. However, he pointed to a Hagerty report spotlighting several muscle cars from the ’60s and ’70s dropping in value by 15% or more.

Further insights appeared in the user comments, where Suddenlyits1960 commented, “The people who collected 50’s and 60’s cars are aging out of the hobby and divesting themselves of their collections.”

“The cars we coveted as kids, are the ones we buy. Gen X and Millennials don’t covet 1967 Corvettes,” Orcinus1967 added. “Also, there have been a lot of cars coming out of collections. People are dying or cashing in. The relatives of the people who die can’t afford to keep them and in the US, the older people who own them are moving to small retirement communities down south.”