Aluminum or Tin coated copper

Please take a look and give me your opinion are these wires Aluminum or Tin coated Copper. Home is 100 years old, no idea when the electrical was done. At first I thought Aluminum but now I’m questioning myself.



Tinned Copper would be my first and best guess. The cloth covering is an indicator. Solid aluminum (late 60’s early 70’s) had plastic insulation.

I agree with Mark, tin coated copper. The old rubber/cloth covered conductors are the best indicator.

Thanks Guy’s

Don’t forget the overfused wires…:wink: