Vintage Sheer Black Lace Front Panties, Sheer 28 waist, 1960s double gusset

ERA: True vintage item from the 1960s
MEASUREMENTS: the item is 10 inches long down the sides, elastic waist stretches from 22 to 28 inches, 37 inches around hips
MATERIAL: nylon or acetate?
LABEL: none
CLEANING: hand washed
Slinky black knit panties with all sheer lace front panel (lace doesn't stretch) Black elastic waist and legs.
CONDITION: Very good condition. There is a 1-1/2 inch repair line on the back starting at the elastic on the waist.