I bought the badge together with a lot of Romanian cavalry items. All of the romanian items are genuine.
In the lot with the polish badge is also a polish cavalry pagon issued for the international military cavalry game held in Warsawa in 1929, genuine item also.
This is why i was curious over the badge considering the big amount of fake/copies in the market.
Considering the lot the polish regimental badge needs to be valid, but who knows..