Varieties & Errors – Page 10

Obstruction Foldover Errors on Series 1977 Federal Reserve Notes: When Paper Debris Causes Blank Sections in the Portrait Area

June 15, 2026 by

Obstruction foldover errors on Series 1977 Federal Reserve Notes rank among the most visually dramatic printing mistakes in modern US currency, creating ghostly blank voids where presidential portraits should appear. This guide breaks down exactly how these errors occur, which 1977 districts and denominations are most collectible, and what separates a mid-grade curiosity from a four-figure certified specimen.

The Series 1935E $1 Silver Certificate Experimental Variety: Identifying the Unique Paper Trial Notes Produced in Limited Quantity

June 15, 2026 by

The Series 1935E $1 Silver Certificate experimental variety represents one of the most intriguing production anomalies in mid-20th century American currency history, born from the Bureau of Engraving and Printing’s post-World War II effort to find a more durable paper stock. Understanding how to identify these scarce trial notes, distinguish them from standard 1935E issues, and assess their collector value can open a rewarding specialty within Silver Certificate collecting.

Mule Notes Explained: Mismatched Plate Combinations and How to Identify Them

June 15, 2026 by

Mule notes are among the most fascinating transitional varieties in US paper money collecting, created when face and back plates of different microprint sizes were accidentally paired during production. Understanding how to identify them, which series to target, and what drives their premiums can transform how you approach a currency collection.

Fake Overprint Errors: How Counterfeit Error Notes Are Made and How to Detect Them Before Buying

June 15, 2026 by

Counterfeit error notes are flooding the collector market, with fake misaligned overprints, shifted seals, and simulated ink smears deceiving even experienced buyers. This guide breaks down exactly how these fakes are made, what authentic printing errors actually look like, and the specific tests you can run before spending serious money on any error note.

Star Notes: The Complete Collector’s Guide to Federal Reserve Replacement Notes

June 15, 2026June 15, 2026 by

Star notes are among the most sought-after varieties in modern US paper money collecting, with some low-print runs fetching hundreds of times face value. This guide breaks down exactly what makes a star note special, which series and districts to target, and how to build a meaningful collection.