There are a couple of other forgotten mandolin recreations planned for the next year or so. A carved reverse scroll ‘smurf head’ mandolin inspired by a couple of Bacon & Day mandolins of the 1930s, such as this Grand Sultana.
Another is a Harmony Batwing, often seen as an electric mandolin, but I can see no reason what a good acoustic mandolin could not be made from this design.
Images from The Music Emporium and Charles Johnson’s Vintage Mandolin