Late 50s Big E hidden rivet 501xx selvedge Levi’s jeans
Lemon yellow stitching
Offset belt loop
Missing one belt loop
Darning to crotch area — crotch seams had split and frayed at the seams, darning is not visible while being worn.
Small frayed spot on right knee 
Wear to back hem of leg from being cuffed/boot wear. Denim is structurally sound and sturdy, these jeans were very well preserved for decades and are ready to wear.
40” waist
14” rise
54” hip
29” inseam
42” outseam
14.5” across upper thigh 
9” across hem/leg opening at hem