Javier Mercado
Numismatic Expert & Writer. BA in History and BS in Computer Science. He’s a member of the American Numismatic Association (ANA) and the Numismatic Literary Guild (NLG) and write in several digital media specialized in collecting, auctions and antiques reviews. More info on Wikipedia and Google Knowledge Graph.
Expertise
He is an active investor and a member of the coin collecting community, specializing in antique United States coins. He uses this expertise to disseminate knowledge and interest in coins among the broad audience of Coin Collectors through both simple and high-level articles.
Features in Other Publications
Experience
Javier has been an active member of the coin collecting community for approximately 15 years. He has gained extensive experience during this time and wishes to share it with his readers.
Education
He completed a Bachelor’s degree in History from UNED and a degree in Computer Science from the University of Cádiz.
About Coleccionistas de Monedas
Coleccionistasdemonedas.com covers a wide range of topics related to antique coins, including coin sales, value, grading, trends, auctions, critics and opinion. Whether you are a collector or want to sell your coins at a fair and reasonable price, we want to be your go-to source for what you need to know.
Our team of editors has a lot of experience in the numismatic industry. In fact, all the reviews on our site are written based on their first-person experience and testing. Coleccionistasdemonedas.com has numismatic professionals, appraisers and people of proven reputation who help verify the accuracy of our content, specifically on topics related to investing in high-value coins.
We also work daily to keep our content as up-to-date as possible and indicate the date of the latest editorial modification at the top of our articles.
Coleccionistasdemonedas.com is a member of the A.N.A (American Numismatic Association), the most important numismatic association in the United States.
25 Feb, 2026

Lincoln Penny Values Chart 2026 (Up To $100,000!)
25 Feb, 2026

2020 Quarters Worth Money – W variety, Bat Error, Charts
25 Feb, 2026

What Quarters Are Worth Money? Hidden Treasures
12 Feb, 2026

Unlocking the Value of Lincoln Wheat Pennies: A Guide for Collectors and Investors
15 May, 2025

1964 Penny Value Guide: Errors, Prices and Rare Variants Worth Up to $13,500
12 May, 2025

2009 Penny Value (Up to $3,500) D Series, Charts, Rare and Errors
30 Dec, 2024

1958 D Wheat Penny Value (Up To $2,880!) Errors & Mintmarks
30 Dec, 2024

1795 Liberty Coin Real or Fake? How to Tell if you have a Real one – Mints & Value Chart
30 Dec, 2024

1941 Mercury Dime Worth – Rare, Errors, Mint Marks and Value Charts
30 Dec, 2024

Old Dimes Worth Money List – Mintmarks & Value Charts
29 Dec, 2024

1923 Liberty silver dollar trust misspelled Value, Error and Mintmarks
23 Dec, 2024

List of Rare and Most Valuable Australian Coins – 2026 Updated Value Guide
23 Dec, 2024

2005 Buffalo Nickel Error: Value, Charts, Mintmarks (Up to $5,000)
03 Apr, 2024

1902 Indian Head Penny Value – 2026 Prices, Mint Marks & Charts
03 Apr, 2024

1920 Wheat Penny: A 5-Graded Scale to Determine Its Value – Rare, Patina & Key Dates
03 Apr, 2024

1952 D Wheat Penny Value – Grades, Charts, Errors
03 Apr, 2024

What’s the Real Value of the Walking Liberty Half Dollar? – Charts & Key Dates
03 Apr, 2024

1937 Buffalo Nickel Errors – Ultimate Guide – Indian Head, Value Chart
03 Apr, 2024

1957 D Wheat Penny: A 8-Graded Scale to Determine Its Value
03 Apr, 2024

1935 – 1936 Indian Head Nickel Value – Buffalo Nickel Guide, Charts & Mintmarks
Numismatic Expert & Writer. BA in History and BS in Computer Science. He's a member of the American Numismatic Association (ANA) and the Numismatic Literary Guild (NLG) and write in several digital media specialized in collecting, auctions and antiques reviews. More info on Wikipedia and Google Knowledge Graph.
Expertise
He is an active investor and a member of the coin collecting community, specializing in antique United States coins. He uses this expertise to disseminate knowledge and interest in coins among the broad audience of Coin Collectors through both simple and high-level articles.
Features in Other Publications
Experience
Javier has been an active member of the coin collecting community for approximately 15 years. He has gained extensive experience during this time and wishes to share it with his readers.
Education
He completed a Bachelor's degree in History from UNED and a degree in Computer Science from the University of Cádiz.
