If you want the full shiny triple and HT, you will need to find a Tiagra FC-4603. As @Mr_Bump says above, the main rings are 130 mm BCD. It's a very nice chainset as most owners know...tho not so nice as the FC-7803.
An alternative is the Sugino XD-2 triple from Spa Cycles, a stone bargain but from a different era, requiring a square-taper bb.
If you want the full shiny triple and HT, you will need to find a Tiagra FC-4603. As @Mr_Bump says above, the main rings are 130 mm BCD. It's a very nice chainset as most owners know...tho not so nice as the FC-7803.
An alternative is the Sugino XD-2 triple from Spa Cycles, a stone bargain but from a different era, requiring a square-taper bb.
Good luck with your search!