Hi everyone! Quick question about this Vanity Fair label: does the 51 in the style number indicate this nightgown was made in 1951? I've never had one with a style number formatted like that before, and my google-fu is failing me: some sites say yes, it's a year, others say no. The only one in the label resource that looks similar is from a paper tag, not a label, so I'm on the fence. Thanks in advance for any help!