Vintage 1950s cocktail dress

Gorgeous black and metallic gold flotal brocade belted tank style dress with matching fully lined 3/4 sleeve jacket. Size tag says 13, no brand tag. Very very good to excellent condition. Note: rust stains on 4 of 5 buttons and wear on belt buckle.. You could easily add new buttons and belt. See pictures. This was my deceased mother's, I have guessed at original price. I dont know how to price this. Its such a nice piece. Plz don't be afraid to make an offer.