Here is the roll of 14/2 speaker cable that as you can see was manufactured in Sept. 2009. That's just under 3 years ago.
When you strip this wire, here is what you get. Copper has corroded and is no longer nice and shiny. This is not the old end of the cable, but a section taken from about 6' in.
Carver: TFM-45, PST-24 Cassette, Extra Carver Gear: CT-6, C-11 (S/N 00001).
Polk Audio: Mains SRS 2.1TL, Center CSiA6, Surrounds FXiA6 and FXiA4, Sub DSW MicroPro 1000, Extra Speakers SDA 2A, SDA 2Btl, Monitor 10A.
Turntable: Dual CS 714Q
Bluray/SACD: Oppo BDP 83SE
CD: Sony 330 300 Disk changer