Vintage Oscar de la Renta SILK Nightgown

This Oscar de la Renta Nightgown could be 40 to 50 years old. The gown is from the family and has been dry cleaned. There is one very small mark on the back of the gown. I have looked at the gown and I didn't find any defects. It is a pretty pale blue. The length 50 in., Shoulder to shoulder 15 in., arm length 23 in. M