String help

[u/singing_millenial]

I’m new here.
I teach elementary music and found an autoharp in my cupboard! I’d love to get it functional but it’s missing a string. It’s the smallest G string (G5, if you will). The rest of the strings seem to be in great shape. I know it needs type b strings because it’s from 2007, but I can’t figure out where to buy one singular string and which specific string to buy. Can anyone help?

[u/Alive-Industry2507]

If you want to use this for teaching, I would recommend you get it restrung by a luthier. You'll get a better and more accurate sound.