US Notes

Rubber Band Damage on Paper Money: How Graders Assess Compression Lines, Surface Breaks, and the Limits of Conservation

Rubber band damage is one of the most misunderstood forms of paper money deterioration, and many collectors discover its impact only when a note comes back from a grading service at a lower grade than expected. This guide breaks down exactly how professional graders at PCGS Currency and PMG evaluate compression lines and surface breaks caused by rubber bands, and what conservation options realistically exist.

Read More →

Chemical Damage to Currency: How to Identify Solvent Exposure, PVC Migration, and Acid Deterioration in Paper Money

Chemical damage is one of the most misunderstood and underestimated threats to paper currency, capable of destroying value silently over decades. This guide walks collectors through the science and visual cues behind solvent exposure, PVC migration, and acid deterioration so you can protect your holdings and make smarter buying decisions.

Read More →

Silent Destroyers: How Humidity, Mold, and Foxing Devastate Paper Currency Collections

Environmental damage is the leading cause of value loss in paper currency collections, yet most collectors underestimate the threat until it is too late. This guide explains exactly how humidity, foxing, and biological growth attack your notes, with practical steps to stop the damage before it starts.

Read More →

Climate vs. Currency: How Desert Southwest and Humid Southeast Conditions Shape Long-Term Banknote Preservation

Where you live may be the single biggest variable in how well your currency collection survives the decades. This deep-dive compares preservation outcomes across America’s most extreme climate zones and gives collectors actionable strategies for every environment.

Read More →

Water Damage on Paper Money: Tide Lines, Staining, and Whether Conservation Can Save a High-Value Note

Water damage is one of the most misunderstood and feared conditions in paper money collecting, yet not all wet notes are lost causes. This guide breaks down the science of tide lines, staining, and foxing, and explains when professional conservation can rescue a high-value note worth thousands of dollars.

Read More →