Capped Bust Coinage – Open Registry

Capped Bust Seated Half Dimes Ultimate Set

Click image to access Gerry Fortin Rare Coins Inventory

Capped Bust Half Dimes open registry, as explained on the main registry page, is an opportunity to showcase both certified and uncertified circulated (and uncirculated) half dimes. The purpose of the registry is simply for enjoyment and to promote the awareness of Capped bust coinage. Though there is sure to be good natured competition, there are no awards, luncheons, or parades – just an opportunity to share the additions to your capped bust half dimes set.

A set of Capped Bust Half Dimes complete by variety (the Ultimate set) is no easy task with 122 coins including a R8 and 6 R7s. The pursuit of the ultimate set collection requires patience and persistence, but also provides for those who love the thrill of the hunt - these little beauties grow on you quite quickly. Almost more difficult than finding a selection of these coins is finding the reference book used to attribute them Federal Half Dimes 1792-1837 by Russell J. Logan and John W. McCloskey published in 1998 by the John Reich Collectors Society. Liberty Seated Collectors would recognize John's name - the current President. Their 293 page book is considered the Bible among collectors and dealers alike. While not in color, it gives a very pleasing picture of every variety obverse and reverse. The book covers early half dimes too, but this is beyond the scope of Capped Bust Half Dimes. The authors describe Emission Order, Remarriage charts and die deterioration and provide a cross reference from Valentine's numbers. Their quick finding chart is very helpful in determining the correct number for any date. Like any good reference on coins, the authors have their own 'code' to describe what they reference within the text of their descriptions.

John Okerson, July 8, 2014

The Capped Bust Half Dime Ultimate set input form is available in Excel format. Submitting a set is as easy as opening this link, adding your coins and descriptions and submitting to Gerry Fortin via email at Click here for Microsoft Excel Form; you can use the input form as a tracking method for contents of your collection.

Please email your completed form to and I will do my best to quickly post your set or recent updates!


Capped Bust Half Dimes - Ultimate Set

Excel Submission Form


% Completion

 Weighted Grade




The John Okerson Collection




August 1, 2015



% Completion: Number of coin entries divided by total entries requirement to complete a set; for Variety Set, Business Strikes, then 122 entries are required for a 100% completion.

Set Weighted Grade: The grade of each coin is multiplied by the "rarity factor", then summed and divided by the total of the "rarity factors" for those coin entries in the set.

Set Rating: The grade of each coin is mutiplied by the "rarity factor", then summed and divided by the total of all "rarity factors" for a completed set.

Rarity Factor: Rarity factor using William Herbert Sheldon's scale released in 1958 is applied to the numerical grade of the coin. While being developed for the one cent coins which he studied, the scale has been used for defining the rarity of all coins. These R values are initially used as the Weight factor for Capped Bust Half Dimes to determine Set Rating and Set Weighted Grade.



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