In modern terms this would be called a cross-over instrument. The tuning and the neck length and width are strictly mandolin but the banjo style drum-head body gives it a distinctly different voice. It is a little louder and more strident a sound and it lacks the sustained ringing of the high notes that can be so appealing in a mandolin. But the different tone is like different stops on a organ. I have heard it used to delightful adavantage.
This example has a marking on the head saying Tyler Mandolins.