1920s vintage silk Crepe de Chine panties or tap pants have side slits trimmed with French needle lace. Post World War I, prohibition-era copper color. Please see the "hanger" images of circled subtle stains.
Rare to find these in this size! Modern size equivalent X-Large, XL.
Actual measurements:
Waist 28 inches not stretched (40 inches maximum when stretched)
Hips 48 inches maximum
Front rise 17 1/2 inches
Rear rise 18 inches
Leg openings 26 inches (not including side slit)
Side slits 9 inches
Side length 17 inches