According to the PCGS Certification Database, the requested certification number is defined as the following:
|21-Mar-2018||$52,800||Stack's Bowers||March 2018 Baltimore U.S. Coins Auction|
|13-Jul-2017||$37,600||Legend Rare Coin Auctions||The Regency Auction XXII Las Vegas July 2017|
This cert is currently in the Set Registry inventory of DLH and is featured in one or more sets, including D. L. Hansen. $20 Gold Date Set. (1850-1907).
View a Set Registry collection that includes a 1878 $20 coin: