This is new brand of the Iron Necklaces Coin of the Faceless man coin. Given to Arya Stark by Jaqen H'ghar In George R.R. Martins A Song of Ice and Fire series. The obverse of the coin shows a hooded figure that at first seems truly faceless, yet on turning in the light a shadowy figure can be seen that seems to change expression. The reverse side features the text of the words that go with the coin VALAR MORGHULIS, VALAR DOHAERIS. In the language of Braavos this translates as: "All Men Must Die", and "All Men Must Serve".
This iron coin measures 1.1 inch or 29mm and weighs 5 grams pure iron.
The necklace is 12,2 inches