I think there is confusion as to the term Mechanical Doubling. Simply put, anything that gives the impression of doubling that is not caused by a doubled die can be referred to as Mechanical Doubling.
A slight die hop, shift, twist, and so on would result in " Mechanical Doubling" all without value.
There are other forms of doubling that are without value such as Die Deterioration Doubling that are named according to the cause of the doubling. Still no value.
This dime shows typical Mechanical Doubling on the letters and the date.
A slight die hop, shift, twist, and so on would result in " Mechanical Doubling" all without value.
There are other forms of doubling that are without value such as Die Deterioration Doubling that are named according to the cause of the doubling. Still no value.
This dime shows typical Mechanical Doubling on the letters and the date.



















