From Dorothy’s ruby slippers in “The Wizard of Oz” to Harry Potter wands, props from iconic films are earning big dollars at both auction and private sales.

But as prices for these objects have surged, so have questions about their authenticity.

Many props today are outsourced to shops that have industrialized the craft with 3D printing technology that has made it much easier to produce knockoffs.

“Star Wars” fans thought they’d been shot into hyperspace.

Goldin and Studios memorabilia auction houses announced in March that an original and the only fully intact Han Solo DL-44 blaster — the very one wielded by the smuggler played by Harrison Ford in “Episode IV — A New Hope” — would be going on the block.

Movie prop collectors are an obsessive lot, and for the passionate subset devo

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