Brass Coin
Unlike steel, brass coins wouldn't be as risk of destruction because someone wanted to try and use the coin as material or other uses. Iron coins were proposed, but they're a pure metal used by everyone for everyday objects. Brass is the armor and weapons of our ancestors, but not the weapons and armor of today. We use brass to make things pretty - the tackle of our horses, the candlesticks we use to light our houses, jewelry. Brass takes work, like steel, but doesn't take the metals we use for war.
History
The Adrakian Empire standardized the use of gold, silver, and copper coins at some uncertain date of its era. The three coinages together were called the Triad The exact exchange of each was generally on a scale of ten among the local coinage and then varying when mixing coins internationally.
Inflation came about as a result of coin minters working to keep their coin updated to their patrons' wishes, old coin being found and brought in and reminted, and counterfeits seeping their way into the pockets of the honest.
Origin
The exact cause of the Gold Flood is uncertain, only the timing is known. Most with the knowledge and interest in finding the exact origins of the flood agree on multiple causes and disagree on which causes. Ruins looting, battlefield bounty, the once-wealthy having their gold and silver drained from the coffers, or counterfeiters with their hands on legitiment coin molds, for the uncertain mix and degrees of reason, the economies on Soplas had sudden abundance of their more precious metals used as coinage. Eventually coin value dropped until no one was accepting any and only dealing in direct trades - goods for goods or goods for future promises kept between locals.
After the Great War, each country and political power began reworking their treasuries individually before word spread among the merchants of what the neighboring regions were doing.
Diplomatic methods eventually carried discussions and debate over how to replace and somewhat recover lost or devalued wealth. Decidenamelater proposed the use of brass, arguing down the other popular choices of steel or iron.
Due to the lack of other current and nonornamental uses for brass, it eventually became the agreed upon new standard for merchants to carry.
Materials
Many brass coins are former candlesticks or jewels, but the drive to create the coins reopened tin mines for creating brass in large amounts to replace the Triad. The replacement process took two years, most of the delay came from more rural regions seeking assurances from their leaders the merchants were not trying to swindle them of their goods.
Tormian Calendar:
Goltherine Calendar:
Cities Calendar:
1 Brass = 3 Gold or 30 Silver or 300 Copper (The usual inflation at stores)
It looks like you have a solid economic system built in your world. It feels very realistic
If you are looking for my Worldember articles check Magic Earth or My Worldember Progress Page
Thanks! I generally worldbuild by starting with realism to the best of my ability and then adding in more fantastical aspects. As for the economy, okay, I'll admit, it was because I made a joke about people being suspicious of foreign coin and my players having very old coin no one recognized and so people inflated the prices. Then I was thinking of leaving behind the D&D Gold Silver Copper economy and took inspiration from real life (gold standard, silver mining to trade across Asia etc.) before deciding to playing with a "useless" metal like brass. Because brass is pretty and I have no idea what it was used for historically once steel was in the picture for weapons and armor.