Rodriguez, Robert
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"1792 Silver and Non-silver Cents: A Study"
"The 1792 Morris So-Called Silver Center Cents"
"The Continental Dollar: Coin or Medal"
(L 2024)
6 entries found
Displaying records 1 — 6
11/10/20171792 Silver And Non-Silver Center Cents: A Study
Visual and analytical study of various examples of the 1792 United States silver center cent (Judd-1), comparing the silver plugs in each.
4/29/2020Final Thoughts -- 1792 Morris So-Called Silver Center Cent
Summary of investigation into the Morris so-called Silver Center cent, detailing the author's efforts to re-certify the piece and donate it to the American Numismatic Society.
6/29/2021The Continental Dollar, Coin or Medal?
This article argues that the Continental Dollar was struck as a coin and not a medal. The authors compare the Continental Dollar edge devices and compositions to that of other pieces struck in the same era. Extracted from The MCA Advisory, June 2021 (vol. 24, no. 2).
9/1/2021The Treaty of Paris, Betts-614: A Census Study
Census of known examples of the Betts-614 Treaty of Paris medal. Excerpted from The MCA Advisory, September 2021 (vol. 24, no. 3).
3/12/20231792 Silver and Non-Silver Center Cents: Further Studies of the Silver Plug Contained in the Morris So-Called Silver Cent
Analysis of plug shapes and sizes on the obverses and reverses of 1792 Judd-1 silver center cents. The author demonstrates that most examples exhibit a circular shape on one side and a slightly ovoid form on the other, while the Morris reveals a circular shape on both sides.
4/30/2024History Recovered: Saga of the 1792 Silver Disme
(Introduction) This paper is about a journey of discovery that entails the most extensive and intensive scientific examination ever conducted in the field of numismatics. The target of this groundbreaking investigation is a 1792 silver disme Judd-9, one of the great rarities from the 1792 US Mint pattern coinage. As a result of over 800 hours of investigations that included photographic analysis, the use of two types of scanning electron microscopes and a historic first for numismatics, the use of synchrotron-radiation-based X-ray micro-diffraction (μ-XRD) technique at the Advanced Photon Source (APS) of the Argonne National Laboratory (ANL) to recover images from the subsurface metal lattice over a period of nearly 2½ years, we conclude this coin is THE design work surface for one of the first two coins of the United States, a 1793 half cent. Additionally, we also believe it entails a potential love story.
