'Could be I suppose. The seller called it primavera from South America. It's very brittle but has beautiful color. My plan was to put a coat of shellac on it to enhance that golden tone and then spray lacquer. But I have to repair those cracks first.
I'm told that I can remove the center strip on the inside of the box and replace it with a wider one to stabilize it, then fill the cracks with dust or slivers of the same wood and sand. If anyone has a better idea, I'd love to hear it.
I like my Narra back mandola ...the stuff is hard very tonal,drum like projection.Anyway they look like natural grain and not your backseam and Pierre's MO sounds good unless you're hungup on what a great matched set it is.Gonna go lookup primavera.Or sit here and look it up.
I'm wondering if this was well seasoned or perhaps your environment is dry. You might try humidifying to see if they close up some but I think it will continue to crack in the long run. I agree with Pierre if you don't replace it outright.