The 9 Classes of Doubled Dies & How They Happen

Why do coins have doubled dies? How do they happen? In my last video about doubling, I gave a short introduction to the concept of doubled dies, but I presented it in an overly simplified way. In this video, I'll tell you about ALL the different types of hub doubling that shows up on US coins to help unpack the mystery so you can better understand and spot doubled dies! Special thanks to Chuck Daughtrey for his help in clarifying some information for this video and allowing the use of coppercoins.com images in the video. To learn more about doubling, check out these resources which I use on a regular basis: coppercoins.com (source of referenced images in video) varietyvista.com doubleddie.com briansvarietycoins.com (Wexler doubled die nickel catalog published here) lincolncentresource.com "The Cherrypicker's Guide to Rare Die Varieties," Fivaz, Stanton, Briggs. 6th Edition, Vols. 1-3 "Strike It Rich With Pocket Change," Potter, Allen. 0:00 Intro & What is a Doubled Die? 3:09 - Class I Doubling 4:02 - Class II Doubling 6:41 - Class III Doubling 9:27 - Class IV Doubling 11:12 - Class V Doubling 12:08 - Class VI Doubling 13:57 - Class VII Doubling 15:08 - Note About Different Hubbing Stage Doubling 18:48 - Class VIII Doubling 19:36 - Class XI Doubling 20:42 - Single Squeeze Hubbing and Doubling Cause 25:21 - Is Class XI Doubling the Same as Class VIII? 26:24 - Single Squeeze Doubling that's NOT Class VIII or IX? 28:51 - Multiple Doubling Types on a Die