FIM - how to tell gold,silver or bronze??

I was going thru my closet and found a pair of FIM speaker cables- How do you tell if they are the gold ,silver or bronze as they do not say on the cable-Also how do these stack up against todays cables?? thanks
I used to have a FIM Gold and Silver power cords. The color of the cable jacket is the telling clue.

I wish I would have never sold that FIM gold power's killer...
Jfrech is correct, the color of the jacket will tell you. If you still can't figure it out call Paul Weitzel at Tube Research Labs. He designed and built these cables for Winston Ma.

I use the FIM/CRL Silver speaker cables and PCs. They're not going anywhere. By today's standards they are still excellent cables and great values.