"Richard H." wrote in message
...
| Guy Macon wrote:
| Aluminum is a poor choice. When exposed to air it
| forms a non-conductive layer of aluminum oxide.
| Tin or Gold-plated or even Copper foil would work
| far better.
|
| Very possible it is tin, considering it's been aging in my shop for
| about 10 years before I put it to use... and still shiny.

It may be vacuum deposited aluminium with lacquer over it.

N