Reformation Olivette Tweed Dress

Please read!!!! I purchased this dress from poshmark. It’s marked as a size 4, however it does not have any manufacturer tags. Also, the last three buttons on the dress do not match. I recently bought the dress from thredup (pictured for reference) and the two dresses are identical in fabric make up, silhouette—everything. I do believe that the dress I’m selling is authentic, given that I compared it to an authentic reformation dress and the two are the exact same. The dress is priced accordingly! There aren’t any flaws on the dress. The mismatched buttons are at the bottom and are barely noticeable when worn.