PART IV. Die Errors:
Collar Manufacturing Errors:
Abnormal Reeding:
Infrequent Reeding on 1921-P Morgan Dollar Coins
Definition: A different collar was used with the reeding being spaced further apart than the normal 1921-P issue.
The below image shows the normal reeding found on the 1921-P Morgan dollar coin (on top) compared to the infrequent reeding which is the bottom coin (indicated by the red arrow).
Image is courtesy of VAMworld.