Gracekelly, the 32 Hermes Black box leather Kelly above was described at fashionphile.com as having "gold tone hardware" but don't all Hermes Kellys and Birkins that look gold in actuality are gold-plated? Perhaps it was mistake in description?
Given the age of your bag, it should be gold plated hardware. Older bags were brass. As Perlerare pointed out, the seller was hedging his bets, but that was not necessary.