Throughout this study, I do not believe I have added ANY new knowledge; however, I have certainly encountered an amazing amount of existing information. Gathered here are important items that helped me understand this stamp. Please note there is some duplication of information from other sections of this study:
This link provides you a downloadable Excel Workbook with multiple worksheets providing Plating Details For All 2,600 Positions and detailing the evolution of Chase to McDaniel version 1 and McDaniel version 2 plating information. Some of the more important worksheets included within the workbook are described below:
1. "Chase", which presents both the Summary Tables of Plating Characteristics and line detail for each of the 2,600 stamps and the 3,311 related recuts published by Chase;
2. "McDv1", which presents both the Summary Tables of Plating Characteristics and line detail for each of 2,600 stamps and the 3,431 net related recuts published in the first series of Condensed Plating Information between 1973 and 1977;
3. "CURRRENT PLATING - McDv2", which presents both the Summary Tables of Plating Characteristics and line detail for the current (to my knowledge) state of the 3,486 recuts published in the second series of Condensed Plating Information articles between 1992 and 2006;
4. "Detailed Changes to Chase", which presents both the Summary Tables of Plating Characteristics and line detail for each of the 2,600 stamps with only the changes to Chase from both McDv1 and McDv2 identified; and,
5. "Condensed Changes to Chase"; which presents only those stamp positions that changed during from Chase's original work and today.
This workbook is downloadable in a protected file. If your really want an unprotected Excel workbook, please contact me directly to discuss.
Finally, this table is the most concise representation of each of the 2,600 positions, and works just fine as a quick and simple data source for the plating. It has a small fraction of the information included in the workbook:
Download this pdf
The 3c Stamp of the United States 1851-1857 Issue, by Dr. Carroll Chase:
Dr. Chase's bible of the 3¢ stamp is now Public Domain digitized by Google and downloadable at Hathitrust.org