• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.


This topic is now archived and is closed to further replies.

FS-501? FS-401?

7 posts in this topic

Is there a legend for these seemingly series-agnostic attributions?


I know they are usually used in reference to DDO's, DDRs, RPMs, etc, but I couldn't find a reference online.




Link to comment
Share on other sites

The numbers are from the Cherrypickers' Guide.


The "FS" is for the authors Fivaz and Stanton.


The numbers must be looked up to be certain, but generally they mean the following:


101-299 DDO or obverse die variety

301-399 obverse date variety

401-499 miscellaneous obverse variety

501-699 mintmark variety

701-799 miscellaneous variety

801-899 DDR

901-999 miscellaneous reverse variety



Link to comment
Share on other sites

I know of the Mercury Dime which is FS-110 and it is the 1936-S Possible Overdate of 1929 so this falls into the obverse die variety


Another Mercury Dime is the 1940-S FS-901 and it is both a DDO & DDR so that is an example of a miscellaneous....how they decide if this coin falls into the 400s or 700s or 900s is unknown to me. ;)


I'm not aware of any coins in the 700s but my focus is primarily with one series that does not have any.

Link to comment
Share on other sites