I see you are not getting much help here.
I would classify your concertina as "modest" and potentially enjoyable albeit limited in its ability to perform and sound like the concertinas of some of the recorded masters of the genre.
How is that for a nice run-on sentence?
My first concertina was a cheap and cheerful chinese CSO (concertina shaped object) There is no reason to suppose that yours might not be even better than my first instrument.
But, please don't judge all concertinas based on the one you have in your hands.
You will very likely have, in comparison to a nicer concertina:
poorly responding reeds
out of tune reeds
of course, when face with a 25 mile forced march and a dearth of proper transportation, even a a half dead swaybacked army mule sounds attractive.
Here are some pictures of the concertinas I build.