Hi! I was given this vintage (antique?) dress and told it was "early 20th century." I'm having some trouble figuring when exactly it is from. It does have a side zipper, but I wonder if it was added later? Inside it has a hand-stitched tag that says MARIELI. I included some pictures of the interior... lots of the work was done by hand... Any guidance or guesses would be greatly appreciated Thank you so much!!!