Antique Micro Mosaic Brooches 3 in lot Signed Italy

Antique Micro Mosaic Brooches
I will start off by saying that these brooches are missing their stick pins and would need to have them replaced, However I believe these are Extremely old with the rectangular brooch having a copper setting, All are signed Italy, Unique square shaped piece that has a very different of color and placement, The oval shaped brooch measures 1.3/4 inches by 3/4' inch, The rectangular piece measures 2.1/4' inch by 1.5' inch, The square piece 1.3/4 by 1.3/4, Again they are missing t pins and to be wearable they would need to have them replaced, Thanks for looking, Questions and requests are happily obliged.