Thank you for contacting Mearto with your appraisal inquiry. Based on the photographs and description provided, the subject of this appraisal is an 1879-S United States $1 Reverse of 1878 MS64+ PCGS Graded Coin.

Based on the description submitted with this piece, this appraisal will attempt to provide information to help the owner understand the appraiser's opinion on: "PCGS graded this rare variety MS64+. I am interested to see if the expert would recommend resubmiting as grade appears conservative to me."

This appraiser feels PCGS's grade of this rare coin is fair. Taking a look at coins at nearby grades on https://www.pcgs.com/coinfacts/coin/1879-s-1-vam-9-reverse-1878/images/133858 shows just how tight grading can be. This specific coin's very minute flaws can be seen on photographs particularly at the edge and among minor surface abrasions.

If the coin were resubmitted, attaining a *PCGS* grade of 65 would indeed likely make a significant difference at auction. At a 64+, a FMV of this piece is approximately $3,000 to $4,000 based on recent auction sales. A 65 would likely double that pre-auction estimate.