I thrifted this dress and am preparing it for sale. I'm trying to figure out any information about it and wanted to see if anyone here could help. 1. From the label resource here I think this is probably early 1980s - "Neiman-Marcus" still has the dash. Can anyone help confirm this? Photos below. 2. The other tag says "Ami." Is this a line that NM carried? The style name of the dress? Any help would be much appreciated!