ARGENTINA. La Rioja. 4 Reales, 1850-RB. La Rioja Mint. PCGS Genuine--Cleaned, AU Details.KM-20. While this coins surfaces exhibit brush strokes indicative of cleaning, it nonetheless offers impressive originality and eye appeal. The details are crisp and well-struck, while the argent fields flash with remaining luster. With this level of preservation, the fine details of the reverse coat-of-arms can be fully appreciated.<strong>To view all items from the Pat Johnson Collection, click <a href="https://auctions.stacksbowers.com/lots?sort=auction_date_lot_number_asc&search=From+the+Pat+Johnson&limit=96&parent_category=1-11EIV&lots_range=upcoming"> here.</a></strong>From the Pat Johnson Collection.