A quick rundown of where to shop in Florence from Nove da Firenze:

"Looking for the perfect vintage piece? Pitti Vintage on Sducciolo Dei Pitti has an ample array of well-maintained dresses, shoes, jewelry and other pieces dating from last season to as far back as 1930. Check out the handbags and old-school clutches, they have everything from patent leather to crocodile skin, to add some flare to your wardrobe. The shop is quaint and fairly small, but packed with distinct pieces you won't find anywhere else. Similarly, Sol Gabriel on Via Matteo Palmieri is another great option for vintage duds. The owner and head designer of the label (same name as the store), custom makes all of the handbags in the store from both modern and vintage fabrics.

More here.