Pieces are officially hallmarked by INCM, Imprensa Nacional Casa da Moeda, Lisbon, Portugal when applicable. 


You can consult hallmarks symbols here.


In case of doubt, you can check the hallmark’s authenticity with INCM, Contrastaria da Casa da Moeda. 


You can reach INCM here


You can consult metal prices daily quotations here. 


Industrial production license number: T2792

Online retail license number: T2793

tax number: 254 613 403