Vintage 1981 Levi's Straight Leg selling Jeans

Product Name: Vintage 1981 Levi's Straight Leg selling Jeans
Listed for your consideration is a pair of vintage Levi's 501 orange tab jeans. The size tag lists them as a 34 x 30. Based on the measurements they fit more like a 34 x 31. The 501 selling model number is not listed on the outside of the jeans. Please refer to the last picture as it shows the number 501. There are also the numbers 10 84. I'm not sure if this means October of 1984. The date of 1981 is listed on the tag on the outside. They are brand new with the tags. They do show fading to the fabric. The fabric also looks to be a bit discolored. Please refer to the pictures. Measurements: Across the Waist = 17" Waist to Leg Cuff = 42" Crotch to Leg Cuff = 31".