Thanks for your illustrations Todd, including the vendor's address .
I am sorry but need to tell you, that subject Guidon is a poor copy of a WW2 model . Please look at the illustrations contained in our Article on Identification of Medical ... there are pictures (B/W + color) that's how they should look .
While the Maroon Guidon's color is fine, it looks correctly swallow-tailed, the White Caduceus is also acceptable, but the White Digits should be placed above the Caduceus (any subordinate units under the Caduceus), and there should be no white part near the hoist (entire Guidon is Maroon) .
A Guidon is not attached with ties or grommets (for rope) . Both top and bottom of the Guidon have small leather tongues inside the Guidon's part (that slides around the staff) and those are screwed into the wooden staff itself . Both versions exist, with either all markings on ONE side only, or on both sides (meaning one side has its symbols reversed) . WW2 staffs were one-piece, and broken-down ones (two parts) were only introduced by the end of the war . Covers or cases were always plain khaki or olive-drab . Guidon cloth is wool bunting, or cotton, never polyester, and symbols are always sewn on, never painted or printed . Of course one can argue that some units did have Guidons manufactured locally within a Theater, and those versions probably did not entirely follow AR .
I hope you won't mind my comments, they're meant to help, not to criticize .