Roland, the bottom-most knife is an 006, not an 004. It is 3 5/16 inches long by my measurement. An original Robeson catalog says 3 1/2"s.
All the knives in that post have brass liners and nickel-silver bolsters, as indicated by the third digit "2" in the pattern number, except the bottom-most knife, it has nickel-silver liners and bolsters.
So, yes, your knife, given the "3" in the pattern number should have nickel-silver liners.
Those shields are not gold, but gold-leafed, I believe. The shields are not metal. They are some kind of paper or fiber composite.
BTW; if you place your cursor on most of my photos, the pattern number will show.
The second knife down has covered backsprings.
I do not have access to any old price lists, so I do not know what such knives sold for back then.
DE OPPRESSO LIBER
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