Tahari Formal Dress Size 12

Elegant, formal long black Tahari dress w unique shoulder/spaghetti strap detail. Floor or peep toe length depending on height of heel (I'm 5'9.) Worn to wedding in 2000. Hook and eye seems to be rusting, left mark on lining. There are a few spots near the hem, idk what they are. Dress has been tied in bag for years. Hopefully they will come out!