So we know about the Reach’s golden ‘hands,’ and I’d be incredibly surprised if the Kingdom of the Rock’s currency wasn’t based around golden ‘lions,’ but do you have any suggestions for the names and metallic content of the Seven Kingdoms’ pre-Conquest currencies? I think I remember the North being a primarily silver-based economy, but ‘silver direwolves’ just doesn’t strike me as a good money name.

Let’s see:

The Reach: as stated, “golden hands.” Notably smaller and thinner than your post-Targaryen dragons. 

The Rock: agreed, definitely gold and definitely “lions.” 

The Stormlands: I wouldn’t be surprised if the stag as a coin predated the Conquest, given the Durrandon’s once-mighty empire. Perhaps they were once minted in gold, but had to be downgraded to silver as the Durrandon empire waned?

The North: silver wolves sounds good; when in doubt, simplify.

Riverlands: a wild mix of coinage, suggesting the political instability of the realm. I like the idea of the pious Teagues introducing the Star, tho. 

The Vale: silver falcons are too close to the sigil to be avoided, I think.

Dorne: Golden suns I think would be almost mandatory. 

Iron Islands: “he decreed that gold and silver coin should in future have no value, and ordained that the people should use iron money only…which in weight was over a pound and a quarter, and in value not quite a penny.” And according to legend, dipped in vinigar to make the coins brittle and thus even less useful….