I have just acquired a new instrument that i am not sure what it is. It is about 1 m high (3 to 3 1/2 foot) tall, and has 3 strings with friction pegs (if it had any). The frets are quite raised as well (all two that are left

If I had to make a guess, I would say it is a custom Balalaika, but would love anyones wisdom.
I am a pretend amateur instrument maker, I have made a number of Koauau and Putorino, and I am just having a go at a banjo ukulele, but this instrument has me stumped.
Thank you
John