Curated by The House of III
In Numis Veritas – Truth in Coins. Preserving historical treasures since 1998, The Tertius Collection, under the stewardship of The House of III, stands as one of the most respected private archives of rare and exceptional numismatic artifacts — where history’s most precious currencies tell their timeless stories.
A Quick History:
1690
First Colonial Paper Money (Massachusetts Bay)
1792
Coinage Act establishes the U.S. Mint
1836
First steam coin press introduce
1906
Lincoln Cent debuts
1933
Gold confiscation & shift off gold standard
1986
Introduction of the American Eagle bullion series
2009
Bicentennial of Lincoln and new penny designs
Present
The Tertius Collection and The House of III continue preserving history for generations to come
About the House of III
Our Legacy
Founded in 1998, The House of III exists as a living tribute to Clement Matthew Ziroli III. The House of III represents more than a collection — it is a reflection of dedication to the art of collecting. The collection transcends more than mere acquisition – it embodies a commitment to preserving the tangible artifacts of human economic history.
The Roman numeral “III” symbolizes legacy, lineage, and permanence — ideals Clem has embodied through a lifetime of principled stewardship and historical preservation.
The Numismatic Archive
The Tertius Collection is a premier private archive of numismatics, curated under The House of III with a deep emphasis on American coinage and currency. While it includes select global specimens of historical significance, the heart of the collection lies in the economic and political evolution of the United States — from colonial paper currency and early U.S. Mint issues to commemorative bullion marking America’s defining moments.
This archive reflects a lifelong dedication to preserving the physical record of economic history — with each coin serving as a testament to the values, struggles, and triumphs that shaped our nation and the modern world.
Our Philosophy
“In Numis Veritas” — In coins, there is truth.
At The House of III, we believe that every coin is more than currency — it is a primary source, a vessel of truth forged in metal and sealed by history.
Each piece in The Tertius Collection carries the weight of its time: the character of a ruler, the ethos of a nation, the pulse of an economy.
We do not merely collect — we preserve the unvarnished historical record, safeguarding the integrity of our past so that future generations may learn from it.
The Heritage
A Vision of Preservation
When Clement Ziroli III established this collection, he envisioned more than an assemblage of rare coins. His mission was to create a living repository of human economic history, capturing the rise and fall of empires through their most enduring artifacts.
Scholarly Dedication
Our team of numismatic scholars continues the founder's commitment to rigorous research, ensuring each piece is contextualized within its proper historical narrative. Every coin tells a story – we ensure those stories are preserved with academic integrity.
Cultural Significance
Beyond their monetary value, the pieces in The Tertius Collection represent cultural watersheds. From the Roman denarii to early American trade dollars, these artifacts document the evolution of human civilization and commerce.
Our Mission
The Tertius Collection stands as a testament to our commitment to historical preservation. Each coin and note serves as a tangible link to our economic past.
Preserve Historical Record
We meticulously document the provenance and historical context of each numismatic artifact.
Educate Future Generations
Our specimens tell stories of political upheaval, economic innovation, and cultural evolution.
Honor Cultural Heritage
Beyond monetary value, we safeguard the artistic and cultural significance embedded in currency.
Ensure Generational Continuity
The collection bridges past and future, transferring knowledge across centuries.
The Collection
Ancient Civilizations
Our oldest pieces date to BCE, including rare specimens from Ancient Greece, Rome, Byzantium, and Eastern empires. Each coin bears witness to the rise and fall of history's greatest powers.
Medieval & Renaissance
From Byzantine tremissis to Spanish doubloons, our medieval collection traces the economic evolution of Europe through its most significant currencies and trading pieces.
Colonial Era
An exceptional array of early American currencies, including Continental Currency notes, Pine Tree shillings, and Spanish pieces of eight that funded a new nation's birth.
Modern America
Rare mintings from the Philadelphia and San Francisco mints, including complete sets of Morgan dollars, Saint-Gaudens double eagles, and pattern coins never released to circulation.
Acquisition and Preservation
Authentication
Each potential acquisition undergoes rigorous examination by our team of numismatic experts and independent specialists using advanced metallurgical analysis and historical verification.
Documentation
We maintain comprehensive provenance records, ownership history, and cultural context for every piece, preserving the complete historical narrative beyond the physical object.
Conservation
Our state-of-the-art preservation facility maintains optimal temperature, humidity, and atmospheric conditions to prevent degradation while avoiding restoration methods that might compromise authenticity.
Ethical Stewardship
We adhere to international standards for ethical acquisition, respecting national patrimony laws and ensuring all pieces are obtained through legitimate, transparent channels.
Exhibitions and Access
Digital Galleries
Explore our curated online exhibitions featuring high-resolution 3D scans and detailed historical context for selected pieces from the comfort of your home.
Private Viewings
Qualified collectors and scholars may schedule exclusive in-person appointments to examine specific pieces under the guidance of our expert curators.
Academic Access
We proudly support numismatic research, we provide unprecedented access to serious researchers and institutions.
Through carefully designed exhibition experiences, we bring history to life while maintaining the highest standards of security and preservation. Our forthcoming physical exhibition space will offer rotating thematic displays from our permanent collection alongside special traveling exhibitions.
Legacy and Future
Global Impact
Advancing numismatic scholarship worldwide
Knowledge Preservation
Publishing definitive research and catalogs
Cultural Conservation
Supporting heritage preservation initiatives
Collection Expansion
Acquiring significant pieces for future generations
The Tertius Collection stands as more than a repository of valuable artifacts; it represents our commitment to preserving humanity's economic and cultural heritage. Through strategic acquisitions, scholarly publications, and philanthropic support for historical conservation, we ensure these tangible connections to our past continue to educate and inspire future generations.
Legacy and Future
The Tertius Collection continues to grow through selective acquisitions from discerning collectors.
Stringent Selection
Not every coin qualifies. We seek pieces of exceptional historical significance and impeccable provenance.
Fair Valuation
Our team of experts ensures market-leading compensation for pieces that enhance our historical narrative.
Confidential Process
From initial inquiry to final acquisition, we maintain absolute discretion throughout our transparent evaluation process.
Contact our acquisition specialists to discuss your numismatic treasures and their potential place in our celebrated collection.
The Tertius Collection: A Legacy of Numismatic Excellence