Currency In Ramhknal

Any ship that enters or leaves Ramhknal is thoroughly searched by the Accounting Corps. After taxes are assessed and paid, contraband is seized. For the last twenty years this category has included silver: any and all silver found is forcefully exchanged for the equivalent sum in gold. Avoiding this process is punished by fines, imprisonment or enslavement, depending upon the severity of the case.

This law only affects incoming silver; silver already inside the city is exempt.

The searches for land traffic is considerably more lax. Since Ramhknal is a port city, only connected to a series of dying, jungle overgrown suburbs, there is very little traffic. The few rural farmers who come into the city proper couldn't smuggle much silver in, even if they had it. So they're questioned, their saddle bags are glanced in, and then they're allowed to pass.

Since the state confiscates all incoming silver, this rare metal is worth ten times more then gold. Which is 100 times what it's worth outside, if you're using standard D&D currency. As you would expect, the players could make an absolute killing smuggling silver into the city.

Oh Ramhknal! Oh backwards city! Only in Ramhknal is silver is worth more then gold. 

As for the silver, everyone knows that the Accounting Corps report to the city's ruler, the illustrious Captan. No one knows what the Captan is hoarding all this silver for. I don't know what the Captan is hoarding all this silver for. If you need an answer, feel free to roll a d10.

1. He is building a scale replica of his kingdom, the islands in gold and the sea done all in silver. 
2. He is forging it into swords. Thousands of swords.
3. He is making the largest mirror the world has ever seen. When completed, it will open a portal to the moon.
4. He eats it. He is trying to become an angel. He is slowly succeeding.
5. He has promised it to an army of star vampires. He is running out of time.
6. He pumps it into a buried god. He harnesses it's waste, without realizing it will soon awaken.
7. He sleeps on it at night. He's half dragon, on his mother's side.
8. He is trying to break his curse. He's hoping the bit about silver wasn't a metaphor.
9. He casts it into the sea, to his dead Captaness. By now she must be the richest demon in all of hell.
10. He is making a liquid silver golem. It's big. We're talking kaiju big.