8$ silver very possible

Comparison shows that the rising support can be reasoned to be inflation.
It is interesting that the supports are touched and therefore reinforced over decades.
Also interesting: in logarithmic scale the supports seem to be almost equidistant.
The factors between them are from bottom to top roughly: 1.73, 1.75, 1.87,1.91. Might be close to 1.618?
Chart Patterns

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