looking at this ukulele I can say it is a Concert size and it appears to have a 1 peice soundboard back and sides like the early Koalohas.
They are what others might call soundmonsters and play loud and resonant for its size.
Good luck with the sale it would help if you post your name and date next the uke in a picture. You might also post the a picture of the bottom to show that their is no seam from the sides meeting where a strap button or pickup would be added.