1892 Columbian Expo Half Dollar With Doubled Die Reverse / DDR ?

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Author	Replies: 10 / Views: 2,540
quentinoregon New Member United States 4 Posts	Posted 09/25/2021 11:16 pm I have an 1892 and 1893 Columbian Expo Half Dollar. Both show strong signs of doubling on the reverse. The only varieties that I find on NGC Variety plus are double dates and over stamped dates. Please help me. Are these varieties defined? Please share any info you have. Do I have something special? Thank you. Report this Post to the Staff

quentinoregon New Member United States 4 Posts	Posted 09/25/2021 11:28 pm Pics using my microscope Report this Post to the Staff
nickelsearcher Moderator United States 15389 Posts	Posted 09/26/2021 06:31 am To my eye this appears to be Machine Doubling, also known as Strike Doubling. The 'flat and shelf-like' appearance of the additional material is a key indicator. There is generally no price premium for machine doubled coins. Take a look at my other hobby ... http://www.jk-dk.art Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21786 Posts	Posted 09/26/2021 08:12 am I have to agree with nickelsearcher, but the doubling does make this coin a bit more interesting, and worth noting on a 2x2, and more saleable versus a similar coin without doubling. Report this Post to the Staff
CoinHunter4 Pillar of the Community United States 1086 Posts	Posted 09/26/2021 10:03 am Definitely MD Report this Post to the Staff
CelticKnot Bedrock of the Community United States 12813 Posts	Posted 09/26/2021 10:28 am Probably want to get it into a new 2x2 or at least get rid of that rusty staple. Report this Post to the Staff
quentinoregon New Member United States 4 Posts	Posted 09/26/2021 4:47 pm Help me understand Machine Doubling. Is Machine Doubling going to be a one off? For example, I have 2 1893 Columbian Halves with the same Machine Doubling. Does that make it a variety? Are doubled varieties listed on NGC Variety Plus NOT Machine Doubling? Isn't a DDR or DDO just Machine Doubling? Thanks Report this Post to the Staff
commems CCF Master Historian of USA Commemoratives United States 12254 Posts	Posted 09/26/2021 6:22 pm Here's good article on the NGC site that explains things well. (Note: it uses the term "Mechanical Doubling" vs. "Machine Doubling" but the two terms describe the same thing.) https://www.NGCcoin.com/news/articl...ne-Doubling/ Quote: Is Machine Doubling going to be a one off? Multiple coins with the same diagnostics can be struck with machine doubling. Quote: Are doubled varieties listed on NGC Variety Plus NOT machine doubling? Isn't a DDR or DDO just machine doubling? No. The linked article explains the difference. Collecting history one coin or medal at a time! (c) commems. All rights reserved. Edited by commems 09/26/2021 6:28 pm Report this Post to the Staff
quentinoregon New Member United States 4 Posts	Posted 09/26/2021 10:51 pm Thank you Commems!! Upon reading the article all I could think of is DUH!!. It very clearly defines the difference. However still seems difficult to identify the difference. Report this Post to the Staff
jbuck Moderator United States 187702 Posts	Posted 09/27/2021 12:17 pm to the Community! Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
commems CCF Master Historian of USA Commemoratives United States 12254 Posts	Posted 09/28/2021 10:45 am Quote: However still seems difficult to identify the difference. It can definitely be tricky. You will find that it gets easier after seeing more examples of each type of doubling. Collecting history one coin or medal at a time! (c) commems. All rights reserved. Report this Post to the Staff
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1892 Columbian Expo Half Dollar With DDR?