Brian used basically two brands of Silver Wire:
Analysis Plus
Bolder
Usually on the Price list it was listed as as the SUPER MAX option at $700
SUPER MAX meant fully wired with Silver.
AP = Analysis Plus
It was also not unusual for Brian to use Silver going to the woofer section and not even tell you you had it. If it was closer than the copper on the work bench, and he could reach it easier, you might have silver on your woofs.
If it is listed on the back, then you "for sure" have it.