Siltasaari, or Broholmen, is a central neighborhood of Helsinki.  Most of its area is unofficially known also as Hakaniemi.  On this brilliant real-photo postcard, mailed with five stamps in 1952 (postmark and trilingual Par avion label also there), the caption is hard to make out — white on white is never a great idea — but you can if you try.  Grade: 1