Szu Ling Chen Bridal Gown Beading Long Detachable Train Vintage -Says 12W and 10

Szu Ling Chen Bridal Gown with Beading & Lace. I was told this is Vintage & that it is handmade but I’m not positive on either. Please Note-It says Size 12W in the dress itself and another tag has 10 written on it- I’m unsure if either is correct and I’m unsure if it was altered or not. This was made in Taiwan so maybe the 12W is the Taiwan size and the tag that says 10 is possibly the U.S. Size? I’m unsure of Size. It has a price tag attached but I’m guessing that it is a reseller tag and that it is USED. It has age, has been stored and was probably worn so there are flaws and imperfections including stains, imperfections to the delicate material, beading and other areas of gown. It is missing some of the button covers on the sleeves and it may have other imperfections. My Measurements are very rough measurements to give an idea of size. I wear a 6 in dresses and this is large on me-the shoulders have weight and kept falling down so I held the material in the back to give an idea of the look. I’m small busted and felt that there was a a bunch of extra space in the bust area. I vacuumed my carpet before trying it on but we have a dog so some of hairs /fur is on it. She was not in the room but it dragged on our rug when I wore for photos. Colors may be off because of lighting. It is very wrinkled. I’m Unsure if it’s white, off white, Ivory or cream or something else. This is almost 7 lbs without any packaging-over the standard Poshmark shipping label.