Oleg Cassini Vintage unclassified dresses

I purchased this dress in 2010 with the intentions on getting married but never did. I kept the dress thinking that if I ever was going to get married again I would wear it. As time went on it was looking gloomy on the marriage end. So in 2016 I got the dressed boxed and cleaned. Its been in the box ever since then. Until recently I took it out because I am now getting married this fall. I ended up purchasing a new dress. I unboxed this dress in the beginning of March to take pictures of it to sell it. Willing to negotiate on the price.