The State Quarters - well probably not many people actively putting collections of these together now; but I am fairly sure there are more...
I want to emphasize what I posted in this thread earlier - "Gives me indication it may be possible to identify all 1881-O obverses by mapping...
Yes rotation of the star punch would provide me with a different result. But that really is the whole point. The rotation of the stars may deviate...
I agree the diagnostic is very difficult to see with the coin in hand using a magnifying glass but substitute using an image of the target coin...
Here are CAD tracings of the two different coins in my post above. There is deviation in the positioning of the six design elements relative to...
[ATTACH] [ATTACH] Interesting - I am working on the same type of thing using CAD but not just for VAMs but all coin issues. Instead of...
Mont - thanks for the compliment. I don’t mind you using my post for your coin club newsletter but I would advise against it. It is based on a...
It would take 4 triangles to locate each specific digit of the date but I think two would be sufficient enough to differentiate one die from...
I am not trying to change definitions. All I am saying is it never occurred to me that a requirement of a Hub is it had to contain the whole...
I have always thought of a punch as a tool which utilized a striking force to transfer a design element and a Hub as using a squeezing force....
So theoretically every 1819 obverse die could be identified using two[ATTACH] triangles with the base of both originating from the center of the...
Thanks Condor that clears things up - For some reason I was thinking the N# identified the Obverse Die and the R# identified the Reverse Die. So...
I am venturing into new territory here – Large Cents that is. Alan Turing is not returning my calls and I need some help cracking the Large Cent...
I considered the idea of the die manufacturing process originating from a hub. I lean against it because an on an engraved hub it would also be...
In 1836 the Mint acquired the French Portrait Lathe. Prior to this time the die manufacturing process did not originate from reducing a galvano to...
Being the OP's pictures were of poor quality - I used the other image of an altered 1914-D and overlaid a CAD tracing of 1914-D OBV #5 (Date and...
Don't think PA is a member of SSUTA - Request they provide you with a copy of their PA tax registration.
I am not very familiar with the intricacies of the die manufacturing process of early coinage including CBQs. With that said addressing your...
Although the following does not hold true 100% of the time as recognized by the coin collecting community my rule of thumb is Variety is an...
In most instances an RPM, Doubled Die and other die varieties are no more rare than any other normal coin struck by a specific die. A die is...
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