The phrase "authentic items" is correct and usable in written English.
You can use it when referring to products or objects that are genuine, original, or not counterfeit.
Example: "The store specializes in selling authentic items, ensuring that every piece is verified for quality and originality."
Alternatives: "genuine products" or "real goods".
"There are very few authentic items," she said.
"Today's outcome hurts consumers by preventing them from buying and selling authentic items online," said Alex von Schirmeister, the general manager of eBay in France.
Selection of the most authentic items, on the frequent occasions when some ambiguities are detected, requires careful study and references to related materials.
What better way to allow people to experience the wild west than to build a B&B on a historic site in Tombstone?" Diane scoured antique shops across Arizona and Texas for authentic items for the B&B.
Is it scrumptiously crunchable?" Well, according to the science-fiction and pop-culture Web site io9.com, this special Denny's menu features authentic items like Bilbo's Berry Smoothie; Gandalf's Gobble Melt (a turkey sandwich); Radagast's Red Velvet Pancake Puppies; and the Ring Burger (topped with what appear to be three onion rings to rule them all).
And as the exultation of the "authentic" reaches near-hilarious heights in the design community, with young bloggers creating endless catalogs of "authentic" items like denim or Prouvé chairs, it's not hard to see how a simple handmade ax, and all it implies (a knowledge of wood craft, or the ability to split a log or pitch a tent), would find an eager market.
This is despite the potential of online forms to exploit more authentic item types, and also to facilitate remote access.
Absinthe that contains high levels of thujone may be harmful and is more than likely "bathtub" or homemade variety and not the authentic item.
If the label says it was made somewhere across the world, it's probably not an authentic item, and Native American designers and artisans won't benefit from its purchase.
Beware if you shop at online auctions, both because authentic uniform items are serious collector's items and can command a very high price, and because reproduction items may be misrepresented as genuine vintage, you will need to be careful if purchasing there.
If you are fortunate enough to find authentic uniform items, take care of them, they are truly collector's items.
