This is a rare K. Yasuma & Co. 'tiple' 10-string ukulele, a 1970s Japanese copy of the classic Martin T-28. I believe other tunings are possible.
Vintage Guitar - Yasuma & Co Custom 130 aka the "Lawsuit Guitar"
GEWA Concert Ukulele Manoa Wildlife - Body Sapelli - Laser Design Marlin Jump - Natural satin finish - incl. padded Gig Bag - K-CO-MAR
K A Wright Compositions for Violin & Piano - A Poor Maiden so Schott & Co (SMN)
Yasuma Custom 140 Martin legendary facsimile acoustic guitar
Yasuma Steel Nylon Guitar New Ance 1963