Modern Canadian Doubled Die Varieties - First Edition by John O'connor

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Modern Canadian Doubled Die Varieties - First Edition by John O'connor

The First Edition of Modern Canadian Doubled Die Varieties is a comprehensive catalogue written by John O'Connor, a numismatist from Kawartha Lakes Ontario. In late 2018 after conversing with like-minded experts and collectors regarding the lack of publications, research, or documentation for this type of die variety, John decided to take on the task of documenting, finding, and occasionally making new discoveries of doubled dies on Canadian coins intended for circulation and proof-like sets.


Inside the first edition, readers will find detailed images of how these types of die varieties can occur during a process known as hubbing while also showing the differences between common forms of worthless doubling and genuine doubled die varieties. There are 57 detailed listings with price charts, mintage reports, compositions, weights, and over 100 colored images to use for comparison purposes while searching for these oftentimes scarce varieties.


Additionally, there is an extensive reference list containing 173 doubled die listings across all seven denominations of Canadian coins with some information cited from well-known collectors, experts, and websites that have given the author proper written permission to reference individual listings, listing numbers, websites, images, coin community forum posts, and written information so that collectors new and experienced can have access to presumably the largest Canadian doubled die reference list to date.


Includes 57 Detailed Listings for:

1 Cent - from 1941 to 2008

5 Cents - from 1965 to 2020

10 Cents - from 1951 to 2012

1 Dollar - from 2012 to 2022

2 Dollars - for 2012


Includes 173 Detailed Reference Listings for:

1 Cent - from 1941 to 2008

5 Cents - from 1947 to 2020

10 Cents - from 1951 to 2012

25 Cents - from 1953 to 1972

50 Cents - from 1943 to 1996

1 Dollar - from 1945 to 2022

2 Dollars - from 2011 to 2021

John O'Connor is an experienced trial lawyer, practicing law in San Francisco since 1972. He has tried cases in state and federal court throughout the country.

He served as an Assistant U.S. Attorney in Northern California from 1974-1979, representing the United States in both criminal and civil cases. Among his interesting assignments have been representation of the government during the OPEC oil embargo of the 1970s; writing Fifth Amendment and state of mind briefs for the prosecution in United States v. Patricia Hearst; representing the FDIC, FSLC and RTC during the savings and loan crisis of the late 1980s and early 1990s; representing California Attorney General Dan Lungren in campaign-related litigation; defending R.J. Reynolds Tobacco in significant smoking and health litigation; representing Coach Don Nelson in litigation with Dallas Mavericks owner Mark Cuban; and representing W. Mark Felt regarding the revelation of his identity as Deep Throat.

His father, John C. O'Connor, was a former FBI agent, a prominent Indianapolis lawyer and Democratic politician, and senior partner in the Indianapolis law firm of Ruckelshaus, Bobbitt and O'Connor.

John is married, the father of three grown children, and resides in Marin County, California with his wife, the former Janet Goldman.

SKU Unavailable
ISBN 13 9781777088811
ISBN 10 177708881X
Title Modern Canadian Doubled Die Varieties - First Edition
Author John O'connor
Condition Unavailable
Binding Type Paperback
Publisher J.W. Numismatics
Year published 2023-06-14
Number of pages 152
Cover note Book picture is for illustrative purposes only, actual binding, cover or edition may vary.