To verify authenticity, you can check the back of the top fly button; it should be stamped with the matching number "501".
Vintage 80s Levis 501 0115 Jeans 42x32 Button Fly Blue Denim USA Made
Vintage 80s Levis 501 Redline Selvedge Button #524 USA sz w 15” L 30” (30x30)
Vintage Levis 501 Shorts High Waisted W25 Light Wash Denim Made in USA 80s 90s
Vtg Levis 501 XX 90s Big E Button Fly Redline Selvedge Usa Made 33 X 28
Vintage Levis 501 Jeans Mens 33x30 White Straight Leg Made in USA 90s 501-0651
LEVIS 501 SHORTS B GRADE DENIM HIGH WAISTED SIZES 6 -20 1200+ SOLD FAST FREE P&P