With Steven Unkrich and Victor Livesay joining in, we discuss the best ways to spot fake Washington Franklin stamps, different printing methods, and more! Sources: Stamp Printing Methods - https://stampsmarter.org/learning/Man... Stamp Perforations - https://www.les-wilkinson.co.uk/artic... Double Impression Errors - https://findyourstampsvalue.com/helpf... Early Rotary Perforation Machine - https://postalmuseum.si.edu/collectio... How to Detect Damaged, Altered and Repaired Stamps by Paul W. Schmid - https://www.amazon.com/Detect-Damaged... Bluish Paper Examples and More - https://www.theswedishtiger.com/US-St... More Stamp Examples - https://www.usphila.com/ and https://www.noblespirit.com/past-sales Historical Photos - https://picryl.com/ Historical Footage - https://www.historicfilms.com/ and https://www.criticalpast.com/ Kiusalas Gauge - https://www.usca.nl/wp-content/upload...   Email Steven Unkrich to Purchase a Gauge - [email protected]