Wow, That's a big old tambourine. How old is it and are those tin jingles.
Love the heavy thread spiral stitching around the flesh hoop to keep the skin edge secure and tidy.
That is indeed a big Tambo haha which reminds me I need new jingles for my bell tambo
Could be Eastern European, but it's a bit large for a buben, But it reminds me greatly of 18th military tambourines, which are quite rare outside of museum examples. It's in rough shape but still quite a find!!