Thousands of fake Gibson electric guitars were seized this week in California that could have sold for millions of dollars, according to officials.

More than 3,000 fake Gibson guitars were seized by U.S. Customs and Border Protection in what authorities are calling the largest seizure of counterfeit musical instruments at the massive Los Angeles-Long Beach Seaport.

The 130-year-old guitar maker alleges that the instruments infringe on its design trademarks, particularly the famous Les Paul model.