Interesting history. Was a prototype lugged steel frameset that was a precursor to the current steel frameset available from Serotta. The 'Rosse' name is Serotta's mother's name. Thus the Rosse decals. There is a set of Sidi decals I haven't been able to learn anything about, as of yet. However, they are under the clearcoat, like the Serotta decals, so I am not sure about them. The frameset has a serial number of SP 00014. The SP stands for Serotta Prototype and the 00014 stands for the foirteenth one built. I believe this was the last of the lugged models. There were also a similar number of TIG welded prototypes, as well. That should be seven of each. I have ask Serotta and they thought that they only built two TIG'd framesets and had forgotten about the lugged ones. In fact, they ask me to take the JPegs I posted so they could have for their archives.

I am unsure about the meaning of the 985 on the top-tube and whether SIDI had anything to do with this particular bike. I don't want to do anything cosmetic until I find out the complete history. I would like to have it repainted, but Serotta cannot supply the Rosse decals (obviously, the Serotta name is no problem). I don't want it refinished and not have the full set. Any help out there on getting new decals? Can they be made to match these?

For now I will simply try to match the color and touch up the bike and will use as my 'flatland' machine here at the Jersey shore. Will be great fun to get it built-up over the winter while I am on the MTB and trainer. Then hit the road fresh in the spring.

If and as I get more history I will post. Thanks.