Can you help to identify these frames, bikes or parts?

Looking at it in more detail the BB is marked with size and 602375, a join on the lugs around the BB seems to have an extended W or M similar to the mark for the company in alien, and the strut between the seat stays for the rear brake (which is plenty cute - kind of a raised pagoda shape) has what could be 'SLV' 'SILV' or possibly 'SILVA' stamped into its underside. No obvious markings on the drops sadly.

Seatpost is marked
|||||||||||||||||||||

    MAX LIMIT
      ITALY
    SEL ? OF (letter obscured - presumably SELCOF)

       02 99 (presumably date)

     27 ... 2 (possibly obscured numbers, but I figure this is a standard 27.2)

So I assume a 1999 Rossin ... of unknown steel ;-p any takers for more info?