Date check help 501 Levi's I know the manufacture date is usually after the 3 digit number that you find on the first button, but the date is usually 4 digits, while
VTG 80s 52 Button Factory Levis Type III Denim Blue Jean Trucker Jacket USA Made | eBay
How to Spot Fake Levi's Jeans & Where to Buy Real Ones | Verified.org
My dreams, my stories..: Spotting fake Levi's Jeans?
JeansZa - Code behind Levi' Button
How To Determine Production Date of Vintage Levi's 501 Jeans