Not Polish. I don't think it is aerobatic.
How about left a bit. Is it German? The reason I ask is that the odd-looking AH is similar to a German Wendehorizont - a combined AH and Turn and Slip indicator. What a strange concept - having your backup cloud-flying instrument in the same case as the primary one.
My question about aerobatics was triggered by the toe straps on the rudder pedals. The pedals look like the bindings on my very first pair of skiis!