NGC has identified several "doubled die"
Lincoln Shield cent varieties. Some of these are:
*2009
DDR Formative Years (multiple versions)
* 2014
DDO FS-101
* 2014
DDO VP-101
* 2015
DDO VP-001
* 2019
DDO V-001
Visit:
https://www.ngccoin.com/variety-plu...date/819663/Reading the threads on this message board, I got the impression that most of the doubling that collectors report are examples of "machine doubling." Why would NGC certify such coins and not true "double dies" ?