Darklands Puzzle #1

Since I've decided to resurrect my puzzle blog that no one reads, I'm going to be doing puzzles from the 1992 historical fantasy RPG Darklands, set in the Holy Roman Empire of the late 15th century.

Ironic given that when I played the game, Gretchen had the sword and Gunther had the hammer

The puzzles are thrown at the player by Dwarves occupying human-owned mines in order to proceed further in resolving the issues behind the occupation, as the Dwarves of Darklands, in addition to being portrayed as clever, mineral-obsessed and apparently allergic to Christian symbols, are also skilled logicians and mathematicians. (Ha-ha, very funny, laugh it up, MicroProse. I'm sure you got your jollies from stereotypes.) I only ever encountered a fraction of the puzzles I am presenting here while in-game and am taking ones I like from the cluebook. The first of these:

Your way is blocked by dark iron door. Carved above it are the words:
FACES SPEAK EITHER WHOLLY LIES OR WHOLLY TRUTH.
TOUCH A FACE WHICH SPEAKS WHOLLY TRUTH TO OPEN THE DOOR.
On the door are three metal faces: lead, gold, silver. As you ponder, the
lead face speaks, "Pape mimer aleppe."
What could he mean? The gold face translates, "Lead said he always
lies." The silver face cries, "Do not believe Gold! HE is the liar!" Which
face speaks truth? You think, then touch...
...the gold face.
...the silver face.

(Source: Darklands cluebook by MicroProse Software)

So, this is essentially a knights-and-knaves type of puzzle. Perhaps Darklands mines have become a sort of afterlife for the late Raymond Smullyan.

What the lead face is saying is a canard. There is no point in trying to interpret it. What is important is the incoherent assertion of the gold face: if lead is a "knight" then he would never claim to lie, which is equally true if he is a "knave". Neither will ever claim to lie. The gold face is then a "knave". So the silver face is telling the truth.