Satin and Lace Long Train Wedding Gown Size 12

This is a beautiful white satin long train wedding dress with long sleeves, v neck, bow on back very long train with a crimlin slip with a train. Looks like there needs to be another snap put on back for bow to click in. There is also a faint spot on the dress in front. I did not even notice it at first. I am sure that a dry cleaning will get this out. I do not want to try and mess up the dress. It is very faint like I said. There is a tag inside that says 12 but no name brand looks handmade and there is plenty of room to have it let out if needed. About an inch and a half. Measurements are as follows: front waist to floor is 41" Top of sleeve to wrist is 25" arm pit to arm pit is 16" = 32". Waist is 30" From the bottom of Veck to waist is 12" From the bow on the back to end of train is 93" (roughly) the only tag in it says Beebran T2PC SelVon 201 05112 not sure if this was brides name?