Hi
The R in the box looks the same.
The 'R' has nothing to do with the artist, this why we needed close-up images of the marks.
What you have is a resin base covered with a layer of silver. To identify such pieces and so that they are not to be confused with solid silver items, as they do contain a full set of Italian marks, the Italian government required some extra marks to be struck. These extra marks are a 'R' within a square, this stands for 'Riempito' (filled), and also a set of figures that indicate the amount of silver applied, in grams (1÷2 g, 2÷3 g, 3÷5g, etc.). These are not exact weights, but must fit into range stated by each mark.
Trev.