Why CT Helps Philatelists
Rare stamps are vulnerable to regumming, reperforation, and color alteration. CT imaging reveals paper density, gum layering, perforation structure, and hidden repairs. It can detect added fibers, replaced corners, or chemical treatments used to alter appearance.
Detecting Forgeries
CT exposes density differences caused by added materials or modified perforations.
Preserving Stamp Integrity
CT allows authentication without removing stamps from mounts or holders.
Growing Use in Philately
High value stamps increasingly undergo CT analysis before major sales.
Additional Radiology Topics
CT for Currency and Rare Banknote Authentication
CT for Rare Coin Authentication