I have a classic Olmo Firenze that I absolutely love;however, I've grown a little in the past couple of months and its too small for me now. I'm going to try to sell it and use that money to buy a different bike that's a little bigger. I'm not sure how much it would be worth though. It has Columbus tubing and the original Galli components. The paint and decals are in pretty good shape. I've found a few classic Italian made bikes online and the prices seem to range quite a bit. How much is it really worth?