The Sistema series is first family within Parts of Four. As a mode of creation it expresses the core principle of P/4 which is modularity. The "body" and "insert" are separate parts joined together with pins. This leaves endless possibilities for iteration of material and form combinations.
DA:Dirty Sterling. Sterling silver is dipped into acid to create a subdued surface. No two items reslut are identical and these nuances and variations should be seen as a charecertistic of the product.