Apologies but I think this is a 58 not a 56 frame. I've run a tape from the centre of the bottom bracket to the top of the top tube and it's giving me 58cm. Anyway, photos are below if it's still of interest and the original R800 spec is here on page 31: http://vintagecannondale.com/year/1993/1993.pdf
Ah, still searching for one and saw this come up in the ebay sold listings, looks like it was a 56cm after all! would have been perfect. :facepalm: the search goes on!
I have cannondale saeco red one frameset with a time fork If I'm correct a black fork
I think it's a 56c/c seattube
one like the following http://www.velospace.org/files/abnubdkhhf.JPG
I can make tommorw some pic's of the bike and send them to you with email