The mask almost looks like Rod Serling, doesn't it? I can never forget doing The Mouse with Soupy Sales back in the day. Sadly, I don't do The Mouse anymore. Time marches on. (Thanks to eBay'r meatnose3--other sellers use that moniker, too?--for taking decent pictures.)
You'll see a bit of a similarity between another Ben Cooper Ghost costume and this Gus the Ghost version. The other ghost has the costume image in color, with slight alterations. Gus, here, looks a bit more naughty. I doubt the box the seller, bc3697, is listing this with is the original one: I say that because, usually when the costume is personalized with a name, that would appear on the box; so instead of just "Ghost" the box should read "Gus the Ghost." And that's one of the pitfalls of Halloween costume collecting: knowing if the costume is paired with its original box. And I don't mean to imply eBay sellers are doing it out of convenience. How many Halloween costume experts do YOU know?
Of course, of course, it's the famous Mr. Ed, the talking horse, with moving mouth mask. I'm betting a lot of kids wearing this on Halloween got egged or shaving-creamed but good. Just sayin'. (This one comes from the stable of eBay'r 2013vintagetoys.)