I have some questions about an old DeRosa bike. I have what I believe to be a 70's vintage DeRosa in "well loved but ridden" condition. It is still my main road bike, but my mileage is currently modest (knees of middle age ;( ). In any case, I picked this bike up used, and at least 3rd hand about 15 years ago and the owner claimed it was special edition to celebrate Eddy Merkx's career. I've always been curious if it had any value as a collectors item, and now small amounts of rust are beginning to appear, and I need to decide if I am going to treat it as collectable, or continue to ride it, requiring some touch-up. In any case, I discovered a picture on the web, of what looks a lot like my bike on a "collectors" page, with no explanation given. The URL for this page is www.classicrendezvous.com/Italy/De-Rosa/de_rosa_blue.htm .The only obvious difference between my bike and the one shown, is that in addition to the multicolor stripes on the downtube are overlaid with decals depicting maps of France and Italy. Also, the "D in the heart" logo depicted on the web page does not appear. Instead, there is red on white heart whose tip is overlaid on a horizontal diamond made of concentric (for lack of a better word) strips of different colors. Any ideas about the history of this bike? It appears to have mostly original parts - the only ones I have replaced are the seatpost and set. Is it of any obvious collector's value? I allmost hope not, as It still rides like silk....Looking for input.