70s Jensen Nylon Pants

Jensen black acetate/nylon straight leg pants
Elastic waist
Marked vintage size 14

Measurements below, taken laid flat. Please measure as necessary. Modeled here on someone who typically wears a size 6/size 8 and is 5'8" tall.
Waist 12" at rest, 16" stretched
Rise 14"
Hips 19"
Inseam 24"

There is a reddish discoloration/stain at the crotch along the seam. Can be seen when laid flat but not easy seen when worn.