ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins55% CONFIDENCEOverall confidence: 55%How well the pin's source and references back up its dates.Weighted average of how firmly 4 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
Estimated: Wikipedia[1] says 'In 1968, P&G first marketed Pringles in Indiana' and the earliest known ad ran in an Evansville newspaper; no month or day is published.P&G first marketed Pringles potato crisps in Indiana in 1968, reportedly flourishing in Evansville before national expansion by 1975; the brand now belongs to Mars after its Kellanova purchase.
1.00