1915 $20 PR65 NGC....
" ... the only difference between the proofs and the regular [nickel and silver] coins being the sharper edge and design. ... In order to distinguish gold proofs from the regular issue, it has been necessary to give them a sandblast finish, which changes the appearance of the coins to such an extent that it is almost impossible to put them in circulation. This is something I am not sure we have a right to do."
When those reasons were coupled with the additional paperwork and lost revenue producing each proof coin, von Engelken discontinued the manufacture of proof coinage the following day.
NGC and PCGS combined have certified only 51 proof 1915 twenties. Most known examples cluster tightly in the PR64-PR65 range, with few higher or lower. We estimate that probably no more than 30 individual pieces exist today in all grades. This year has the same coarse finish as seen on the 1914 twenties. The surfaces are usually darker than on 1911-1913 coins. Nevertheless, magnification shows bright, sparkling individual facets on each side. This PR65 example displays the expected coarser texture, as seen on the 1914 in the Ferrari Collection. The color is just slightly more yellow than the 1914, however. A couple of shiny spots are seen over the high points of the design, and the only contact marks (tiny ones at that) are widely scattered over the reverse.
From The Ralph P. Muller Collection.(Registry values: N7079) (NGC ID# 26H4, PCGS# 9212)
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Revised Edition by James L. Halperin, Mark R. Borckardt, Mark Van Winkle, Jon Amato, and Gregory J. Rohan, with special contributor David W. Akers
The Coinage of Augustus Saint-Gaudens is an issue-by-issue examination of these two artistically inspired series of gold coins.
Each date and mintmark is reviewed with up-to-date information, much of which has never been previously published. The book is based on
two extraordinary collections: The Phillip H. Morse collection and the Dr. and Mrs. Steven L. Duckor collection.
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