Good afternoon everyone. I have this 2009-D William Henry Harrison presidential dollar. I noticed what I believe are doubling on several characters on the edge inscription on the coin? The doubling can be observed on the #9 from the date 2009 and the letters P, L, B, U, and S from the word PLURIBUS. Can you give me your expert opinion on this? Since the inscription is made using a separate machine, then this is an automatic machine doubling. Does this type of " machine doubling" carry any premium? Any comments, opinions and info will be greatly appreciated. Thanks
That's not a doubled edge lettering coin. It's the same effect as 'mechanical' doubling, from what I can see in the photos....in my opinion.
Thanks for the comment. I think I worded it wrong. I just read about the doubled edge lettering and it does have a different definition. Right said Fred!
Since the edge inscription is produced after being fed in an edge incusing machine the doubling can't be listed in doubled die category. Therefore making it a strike/mechanical duoubling which is not an error thus, making it just a novelty with no added premium or value. However, if you based it on how a strike or mechanical doubling is described/ defined: caused when a the plancet shifts or bounce resulting with in a flat, shelf like apperance, with no serif separation, then the doubling on the coin that appears on the dollar coin pictured above don't meet that description, right? Trying to learn and understand. Thank you
The problem is that the edge lettering is incuse. MD on incuse detail is different than on regular/raised detail of a coin. MD on incuse can have split serifs, separation, and other odd things. Check this out. Go to the bottom of the page. http://doubleddie.com/144822.html Here is some help on the edge lettering and possible errors. http://www.error-ref.com/part_vii__post-strike_mint_modifications/
Thank you very much for including a link to help address my question, in your comment. The section on wexler's site regarding incused letters and designs on modern coin was really helpful. It was short and concise. Appreciate it!