Rarity of Proof Coins
The rarity of Proof trade dollars forms a separate subject for study. The estimates of the number of pieces known are my own and are taken from experience, auction records, consultation with others, and grading service population reports. In evaluating grading service reports I assumed that the figures listed for Proof-64 and Proof-65 had a higher rate of resubmissions (in hope of still higher grades) than did coins graded from Proof-60 to Proof-63. Of course, the grading services have seen only a percentage of the known coins, and their figures must be extrapolated.
As this study is subjective, future editions of this text will contain revisions for any listings that require them.
Rarity by Mintage
Rarity in all Grades
Analysis by Date & Grade