Specialists in the colonial coinage of Spanish America as well as shipwreck coins and artifacts of all nations. In addition to publishing several catalogs per year, Mr. Sedwick is a regular vendor at major international coin shows, including FUN, CICF, and ANA.

About Us


Daniel Frank Sedwick, LLC is the world’s premier specialist company in the colonial coinage of Spanish America, shipwreck coins and artifacts of all nations. For thousands of registered bidders around the world, our Auctions offer live bidding on the dedicated website auction.sedwickcoins.com, with live video feed for floor auctions, lot-closing alerts, secure payment and more. Our floor-auction events are preceded by live presentations by experts in Latin American numismatics, shipwreck salvage and general history.

All of our auctions are online and feature high-quality images and personalized support (in English and Spanish), whether you bid by phone, online or in person. Our auction catalogs are accessible online and printed in a high-quality format.

Lot viewing before each auction is offered at the auction venue and at various coin shows. We are also book publishers with several active titles on the market, and we are respected appraisers of coins and artifacts, in addition to offering items for sale both online at sedwickcoins.com and at major coin shows. We have sold some of the most important shipwreck treasures ever recovered, and we have sold many millions of dollars’ worth of Latin American, world and treasure coins.

We are members in good standing with most major numismatic organizations, including the world’s most prestigious numismatic dealer guild IAPN (International Association of Professional Numismatists) as well as the ANS (American Numismatic Society) and ANA (American Numismatic Association), and we are fully insured and licensed Florida auctioneers (AU3635, AB2592, since 2007).


Daniel Frank Sedwick, AuctionneerDaniel Frank Sedwick is a full-time dealer specializing in the colonial coinage of Spanish America as well as shipwreck coins and artifacts of all nations and founder and President of Daniel Frank Sedwick, LLC. Daniel Sedwick has been a licensed Florida Auctioneer since 2007. In addition to publishing several online and auction catalogs per year, Mr. Sedwick is a regular vendor at major international coin shows in the US, including FUN, CICF, Baltimore Expo and ANA. Until early 1996 Daniel worked in partnership with the late Dr. Frank Sedwick, who began the business in 1981 and became known as a pioneer in the field of Spanish colonial numismatics with his book The Practical Book of Cobs. The fourth (2007) and third (1995) editions of this well-known book were authored and co-authored by Daniel, who is also a contributing editor for Krause-Mishler’s Standard Catalog of World Coins “century editions” and The Numismatist (the monthly magazine of the American Numismatic Association) and the author of several articles. In addition he has been the editor for several important books in the field including: Roberto Mastalir's The Great Transition at the Potosí Mint 1649-1653 Volumes I & II (2015); the second edition of Emilio Paoletti’s 8 Reales Cobs of Potosí (2006); Jorge Proctor’s The Forgotten Mint of Colonial Panama (2005), and Krause-Mishler’s Spain, Portugal and the New World (2002). Daniel is a member of the American Numismatic Association, American Numismatic Society, Florida United Numismatists and current President of IAPN (International Association of Professional Numismatists), and holds a B.S., cum laude, in Physics and Russian, from Duke University (1989).

Agustin Garcia Barneche, NumismatistAgustin Garcia Barneche or better known as Augi, is also a full-time dealer specializing in Spanish colonial coinage and has been an invaluable addition to the company since June of 2008. He is the Vice President of International Numismatics at Daniel Frank Sedwick, LLC. In addition to helping manage each auction, Augi Garcia’s tasks include working with potential bidders, advertising and catalog production (photography, design and numismatic research and conservation) and advising clients on potential fits for their collections. Augi has been working with colonial material since 2001, and in 2006 he authored the book The Macuquina Code to assist fellow researchers with "numismatic and colonial" terms that appear in Spanish. Augi's latest  work The Tumbaga Saga: Treasure of the Conquistadors, (2010) is about the silver treasure bars manufactured during the conquest of Hernán Cortés (a second edition was released in 2018 and the Spanish edition in 2019). He is also a member of the American Numismatic Association, American Numismatic Society, International Association of Professional Numismatists, and Florida United Numismatists, and holds an associate degree in visual communications/graphic design.


Cori Sedwick Downing, NumismatistCori Sedwick Downing began her coin career in 2007 when her brother, Daniel, began his auction business. Now Cori is the Vice President of Operations and researcher for the company. She is also a genealogist and was the editor of The Florida Genealogist, the journal of the Florida State Genealogical Society. She studies paleography and history as well. Cori assists the company by managing the auctions and office and by researching coins and artifacts. She won the Extraordinary Merit Award for the 2013 Annual NLG Writers’ Awards with the article: “The Charles & Joanna Coinage of Mexico City, 1536-71”. She is a graduate of Duke University (1979), with an A.B. in comparative literature, and speaks Spanish. She is also a member of Florida United Numismatists.


Connor P. Falk, Senior NumismatistConnor Falk is a Senior Numismatist at Daniel Frank Sedwick, LLC specializing in United States and Mexican coins and paper money, having joined the company in 2016. He manages consignments, research and cataloging in addition to assisting with bidder/client relations, advertising and catalog production. Previously, Falk worked in numismatic journalism writing for Numismatic News on U.S. coin topics and contributing to trade publications. Connor today focus predominately on U.S. and Mexican coins and paper money. Beyond numismatics, he also enjoys reading, running, scuba diving and rooting for his hometown football team, the Green Bay Packers. Falk is a member of the American Numismatic Association, the International Association of Professional Numismatists, the Central States Numismatic Society (Life Member), the U.S.-Mexican Numismatic Association (Life Member), the Chicago Coin Club and the Nicolet Coin Club and holds a B.A. in English, from University of Wisconsin - Stevens Point (2014).


Michelle Heidt, CPAMichelle B. Heidt is Daniel Frank Sedwick, LLC's  CPA and new controller. Michelle has been with the company since June 2014 until 2019 and now back in 2023. She manages client accounts and payroll and oversees payments and purchases and inventory, with special attention to auction accounting. Her prior jobs were as an auditor in public accounting for about 12 years and working in the accounting department for Walt Disney World for 3 years. She is a 1993 graduate of University of Central Florida, with a B.S.B.A. in Accounting and acquired her CPA license in 1994.

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Come See Us! Our private office is located in downtown Maitland / Winter Park, FL area, an upscale shopping haven just a 25 minutes car-ride north of Walt Disney World, Universal Studios, Sea World, and many other family attractions. We encourage any visitors to the Orlando area to come see what we have in person. We always treasure the opportunity to meet our clients in person!


Note: For security reasons our office hours are by appointment only (no walk-ins), weekdays 9:30 am to 4 pm. To make an appointment, please contact us no less than 48 hours in advance.


Daniel Frank Sedwick, LLC proudly announces their election for membership in the International Association of Professional Numismatists (IAPN). This highly venerated organization is a coin dealer's guild that upholds ethics and proper business practices worldwide, and membership requires extensive peer recommendation. You will now see the IAPN logo in all our publications. We look forward to the new contacts and associations we will make through the IAPN. For more information about the organization, go to https://www.iapn-coins.org



Affiliations, Memberships and Licenses:

  • IAPN  (International Association of Professional Numismatists ) member since 2010

  • PNG  © Professional Numismatists Guild Member

  • ANS  (American Numismatic Society)  member #1114440, member since 1981

  • ANA  (American Numismatic Association)  member #1114440, member since 1981

  • ANE  (Asociación Numismática Española)  members #6511

  • FUN (Florida United Numismatists) member #9104 member since 1981

  • NLG (Numismatic Literary Guild) member in good standing

  • NI (Numismatics International) member in good standing

  • USMexNA (U.S. Mexican Numismatic Association) member in good standing

  • PCGS (Professional Coin Grading Service) authorized dealer

  • NGC (Numismatic Guaranty Corporation) authorized dealer

  • Licensed Florida Auctioneer #AU3635, AB2592 (since 2007)


Daniel Frank Sedwick, LLC Professional numismatists specializing in the colonial coinage of Spanish America, shipwreck cob coins and artifacts of all nations. Daniel Frank Sedwick, LLC Professional numismatists specializing in the colonial coinage of Spanish America, shipwreck cob coins and artifacts of all nations.


Daniel Frank Sedwick, LLC

P.O. BOX 1964 | Winter Park, Florida 32790

Phone: 407.975.3325  |  Fax: 407.975.3327


We welcome your order, want lists, comments, material for sale or consignment and suggestions.

Please send email to: office@sedwickcoins.com


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