I've found an Egypt, 50 piastres 2007 (https://en.numista.com/catalogue/pieces9329.html), but it's definitely not brass plated:
It's magnetic and the weight is 6.1 gr. in stead of 6.5 gr. Could it be an error: only the steel core and no brass plating? Or is it post mint damage and someone removed the brass plating? Is it that easy to remove brass plating? There isn't any trace of brass plating, not even on the reeded edge.
The face value of this coin is around 0.02 euro, I think that rules out being a fake.