Rewire Spanish two switch wall switch?

Can anyone advise how to re wire a Spanish two switch wall switch that had literally fallen apart so unsure which wire goes where when I removed it from wall

There is a grey and a black wire going into the
Top of the switch

At the both two black wires and a small loop wire that obvious went between two terminals

Any advice or directions please


Hi @Levante

Could you post a picture? This can help