According to the PCGS Certification Database, the requested certification number is defined as the following:
|26-Apr-2020||$1,050||Heritage Auctions||2020 April 23-26 Central States (CSNS) U.S. Coins Signature Auction Dallas, TX|
This cert is currently in the Set Registry inventory of Shawnscoins and is featured in one or more sets, including The O'Connell Collection - Small Cents 1909-1958 with Major Varieties.
View a Set Registry collection that includes a 1951-S 1C coin: