David Mitchell
Biography:
David Mitchell is a highly respected numismatist and data technology expert. He has a rich background in ancient coinage and modern computational techniques. He holds a Bachelor's degree in Classical Studies and a Master's degree in Data Science from the University of Oxford. Throughout his career, David dedicates himself to combining the study of coins with advanced data science. He is a Certified Numismatic Expert (CNE) and a Professional Data Analyst (PDA).
Professional Achievements:
Led the development of advanced algorithms for Coin ID Scanner, improved the app's accuracy in detecting and appraising coins from various historical periods.
Implemented a machine learning framework to enhance the app's ability to predict coin values based on historical data, resulting in a 50% increase in user satisfaction.
Publications:
David has authored numerous articles on the synergy between numismatics and data science, with his work in "Numismatic Technology Journal" and "Data Science Applications". He co-authored "Digital Numismatics: The Future of Coin Analysis". It is a seminal work for academic and practical audiences.
Projects:
Launched the "Global Coin Archive" project, in collaboration with international museums and numismatic institutions, to expand the database of Coin ID Scanner and improve its recognition capabilities.
Developed a project in partnership with economic historians to integrate macroeconomic data into the app’s valuation algorithms.
Participation in Events:
Keynote speaker at the International Numismatic Conference, discussing innovations in data technology applied to coin analysis.
Facilitated numerous workshops at the "Technological Advances in Numismatics" symposium.
Feedback and Recommendations:
David Mitchell is widely acknowledged. His efforts have greatly enhanced the functionality of Coin ID Scanner and advanced the application of data science in numismatic studies.
Contact Information:
Articles by David Mitchell
Coins Overview
1912 Liberty Head Nickel Value: Complete Collector’s Guide
The 1912 Liberty nickel is the last officially produced coin in the Liberty Head series that holds a special place in any collection or museum. Although it is one of many issues that were released under the same emblem, 1912 was nevertheless different.
3 min
Coins Overview
Top 100 Most Valuable Coins in The World
Some coins stand out not only because of their historical significance but because of their immense value. 2025 is set to be another incredible year for collectors, with many rare coins worth money now hitting the auction block or appearing in private collections.
11 min
Historical Coin Profiles
1955 Double Die Penny Value: A Mint Mistake Worth Thousands
Coins are not made perfect. However flawless coins are meant to be, accidental errors do exist, and their worth is far higher than that of an ordinary instance. One of the most popular error types is a double die, and its connection to pennies (=cents) is extraordinarily valuable.
6 min
Coins Overview
Buffalo Nickel No Date: All You Need to Know
Coins are unique creations that, despite large production quantities, may get personal distinctive features over time. One fascinating example of this is the no date Buffalo nickel, i.e., a coin that seems incomplete at first glance but is full of collector curiosity. Minted almost a century ago (1913 to 1938), these were iconic, but many have lost a key detail – the date.
7 min
Coin Collecting Tips
Dollar Bill Origami: Simple Instructions for Beginners
There is something magical hidden in the art of origami. Those peculiar forms that can be created with the use of dollar bills are a clever twist on the traditional art of paper folding. All you need is a banknote, patience, and a bit of imagination to turn paper into hearts and butterflies (and even more).
7 min
Coins Overview
Top Double Die Pennies: Identify, Value, and Collect Rare Errors
What is double die on a penny? In short: a single one receives a misaligned or multiple hub impressions. This leads to duplication of design elements—most frequently the date, legends, and Liberty.
7 min
Coins Overview
How Much Is a Liberty Head Nickel Worth? Value & Key Dates
The abundance of coin varieties in the American monetary system fascinates with its diversity in terms of designs, forms, and denominations. Liberty Head nickels, i.e., coins with a face value of five dollars, are among the items that hold a special place in any collection. But why?
6 min
Coins Overview
The Rarest: 1913 Liberty Head Nickel and Its Value
Five coins. This is all that has been left in the twilight of the Liberty Head series, in 1913. Mysteries and unique circumstances surrounded the appearance of this coin, having made it one of the most desirable numismatic creations in the world.
4 min
Coins Overview
Unexpected Wealth: 10 Coins to Look For in Pocket Change
Sometimes, valuables are closer than you think. Getting pocket change (which is now a rare thing itself) frequently presents unexpected gifts, yet these numismatic offerings may be easily overlooked, especially by those who are not used to employing cash nor familiar with this type of art. What if the change you get the next time may multiply your wealth overnight?
9 min
Collector Apps and Tools
Red Book vs. Blue Book: Which Coin Value Guide is Right for You?
The world of numismatics is rich. The process of collecting in a serious attitude is not just a hobby, but a whole science requiring knowledge and understanding. That is why the search for reliable sources of information about rare and valuable copies of monetary units for the numismatist is a necessity, not a whim.
5 min