Vintage stretch black lace mini dress

This is a vintage stretch black lace mini dress I'm guessing likely from the '60s. It has a keyhole detail on the back and a button and a scoop neck with cap sleeves and a princess cut so it flares at the bottom and lands right above the knee. It's super comfortable and very stretchy and is gorgeous one with a slip underneath. Please see photographs for size and condition details It is in gently worn good condition for vintage dress.