Might be tough to find. 1998 was the only year that CAAD3 Saeco frames were made, and 52 cm is not a very common size. What's more important, that it's CAAD3 versus CAAD4/CAAD5/CAAD6, or that it's a Saeco frame? There is this 52 cm CAAD3 R900 on ebay, but it's not Saeco.