Wouldn't the resistance increase due to skin effect at higher frequencies..the conduction path is narrower because of skin effect.
No not at the frequencies we are talking about. Unless you are a self deluding Hi-Fi nut.
I just tested the resistance using an LCR meter.
thought resistance was a dc characteristic.
It is.
If the frequency does indeed effect intrinsic resistance, then the reading I got at 100 kHz of 60 ohms
There is the property of inductive reactant, perhaps your meter is measuring that, it is measured in ohms as well.