It grounds: On at least 3 identities by similarity:  

- The copper tone of the violins that of a series of new lettle hausehold appliances  (Collezione Rame /The  copper collection);

- Both objects are made with great technical refinement;

- Both objects are handicraft made; - The is a repetition of the writing  "Made in.."" ; One identity by space contiguity;

- Made in Italy / Made in Girmi; One light colour opposition that does not become the focus:

- Cool colour of ground for the violins,  warm colour of the ground for the robot.

So, in the worst way  4  identities and one opposition. Its persuasive effect is at least 75%.