I wouldn't be surprised if they were fakes. If I were in your position I would contact the vendor first. Second I would contact the manufacturer. I saw a documentary on TV a year or so back about golf equipement that was pirated in China that looked so good they couldn't tell them apart until they cut them up to look at the insides. The company started getting quality complaints & discovered the forgeries when they investigated. To build on RR's post. The FTC label for a US made product is "Made In USA".

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.