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.
Wikipedia's[2] Crystal Serenity article gives 3 July 2003 as the christening date (by Julie Andrews) and 7 July 2003 as the ship's entry into service.
Wikipedia gives the ship's christening (3 July 2003) and service entry (7 July 2003) dates, builder, and specifications.
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