References 265% CONFIDENCEOverall confidence: 65%How well the pin's source and references back up its dates.Weighted average of how firmly 2 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

• [1]75%
  Nihonryori RyuGin

  en.wikipedia.org· Posted Sep 22, 2026· Starts Dec 31, 2003· 49% of score

  Wikipedia gives the year only - "Ryugin was established in 2003 at Roppongi, Minato-ku, Tokyo" - so the pin takes that year's last day. It is placed at the Roppongi address of that opening; the restaurant has since moved to Hibiya.

• [2]70%
  byFood: Nihonryori RyuGin

  byfood.com· Added Oct 5, 2026· Added by@ThePinGang· 51% of score

  Restaurant profile.^[1]

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