All About Pocket Knives

Bought a CAMCO barlow today. Black sawcut handles,steel liners and bolsters,two brass rivets in the handles. Here comes the hard part, what looks like a nickel silver pivot pin. The pin looks to be original. Is this an error on the part of the assembler, or just the way it was intended. any help on this would be appreciated. P.S.I am still technologicaly challenged so no pics

I think it is probably original depending on the age.
The older ones I have are nickel silver, like this one.

Dale