I've seen a guitar similar to that, but never a mandolin.
Supposedly Knutson only built three of these — it’s been with my luthier for about a month — finally got her back — I pushed her to the limit yesterday— I have never had an emando that handles guitar pedals as well as this — here’s the evaluation track —
'Collings wanted' 16 hrs
'Joyce Skips Town' 2 days
'Weber Fern A Mandolin' 5 days
'Hey Mr. Mando' 16 days