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.
Happened as dated, per tomshardware.com: "Get started with free access to reviews, badges and discussions.…"
Wikipedia's Nexus 5 article says it was made by LG, "served as the launch device for Android 4.4 'KitKat'", shares hardware with the LG G2 and has a polycarbonate shell and 2300 mAh battery.
GSMArena's[4] Nexus 5 spec sheet gives 137.9 x 69.2 x 8.6 mm, 130 g, Gorilla Glass 3, a 2300 mAh non-removable battery with Qi wireless charging, 802.11ac Wi-Fi, NFC and SlimPort.
GSMArena[3] reports the LG Nexus 5 "became available on T-Mobile on November 14, 2013", closely matching the pin's stored 13 November 2013 date, noting it arrived "almost a week ahead of what some leaks suggested."
Engadget's own report (published 8 November 2013, ahead of launch) states the Nexus 5 would go on sale at T-Mobile "online November 14th for $450... in stores November 20th", a date one day after the pin's stored 13 November 2013 start but within the same launch window.
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