ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins65% CONFIDENCEOverall confidence: 65%How well the pin's source and references back up its dates.Weighted average of how firmly 5 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
Wikipedia[1][3] says "It opened there in 1903" and names no month or day, so the pin takes that year's last day.Swan Oyster Depot opened on Polk Street in 1903 and has run more or less continuously since, pausing only to rebuild after the 1906 earthquake. It is barely a restaurant - a marble counter with about eighteen stools, no tables, no kitchen to speak of - and has been run by the same family for generations, serving the same short list of cold shellfish.
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