How do I know if my home has aluminum wiring?

“Homes built between 1965 and the mid-1970s are most likely to have single-strand aluminum branch wiring. You can check by looking at the wire insulation in your panel or attic, aluminum wiring is silver-colored (copper is orange/red). The wire jacket may also be labeled 'AL' or 'ALUMINUM'. A licensed electrician can confirm during an inspection.”