====== Currency and Standard Mass ======

In Ironbound, trade and physical mass are anchored by a universal standard coin: the **Copper Penny (cp)**((the plural of penny is pence.)).  For the sake of convenience, the silver penny (sp) is also occasionally used;  there are ten copper pence to the silver penny.

While political borders shift and local rulers mint their own regional currencies, commerce across the realm relies on a baseline standard maintained not through brute force, but through sheer **ubiquity and institutional trust**.

Of course, your own fantasy campaign may well establish its own coinage and rules.

===== The Standard Baseline =====
The copper penny serves a dual mechanical purpose in the rules:
  - **As Currency (cp):** The standard medium of exchange for equipment, services, and trade goods.
  - **As a Unit of Mass:** The baseline measurement for weighing small, precious, or standardized items (such as gems, rare metals, and specific spell components) where exactness matters.

===== The Reference Institution =====
The absolute authority of the standard penny is preserved by a widespread, pan-regional organization (such as a dominant mercantile guild, a ubiquitous temple network, or a historic banking cartel) with a presence in nearly every major settlement and trade hub. 

  * **The Master Scale:** Official outposts of this institution maintain a verified reference coin or master-weight. 
  * **Universal Acceptance:** Because merchants universally trust this institution's verification, standard-weight coinage is accepted across regional boundaries, bypassing the need for complex, arbitrary exchange rates. 

//Third-party publishers and Game Masters should define the specific organization, deity, or merchant syndicate that holds this role within their respective campaigns.//