BOLIVIA. Cob 4 Reales, ND (1626-51)-P. Potosi Mint. Philip IV. PCGS Genuine--Environmental Damage, EF Details.cf. KM-17A; Cal-Type-279. Weight: 13.73 gms. Though this Potosi cob does not show its date or assayer mark, making its precise attribution impossible, it does retain much of the monarchs name, denomination mark, and charming castles and lions. The noted environmental damage is mostly limited to the peripheries and the coin presents handsomely overall.<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.<p><p>Ex: Paul Karon Collection (Ponterio 42 - 3/1990) Lot # 335.