Very nice.............this link might be helpful to you.  Strings are available on ebay and amazon too.

 

http://www.jamesjonesinstruments.com/misc/yangqin.html

updated by @salt-springs: 09/26/17 07:38:14PM

You might try a Budist temple for information on that instrument. I know my granddaughter is part Laotian and danced at the temple and they had those hammered dulcimer type instrument and others.

No, I am sorry except to say he liked me sending your info. on the hammered dulcimer to him.

Your "chessmen" are Floating Bridges...

The dulcimer group I play with has someone who has been playing the hammered dulcimer for years, I forwarded your info to him. It is a beautiful instrument, I like the way the peg strings can be closed off.

Good luck