Offered is this very rare PNCS Slabbed Bolivia 8 Reales Silver Cob with a full four digit date of 1650. It is a sea salvage coin marketed and auctioned by Sedwick as one of the chest full of countermarked 8 Reales from the Maravillas shipwreck number 91-8R-1133 (no paper COA). The assayer is Juan Roas who was Chief Assayer at the Potosi Mint from 1649 to 1651.He was one of the assayers in the Bolivia silver scandal (very interesting you should Google it) where the silver content was slightly less on each coin and he was convicted of stealing from the king. The countermark assayer stamp is from several 3rd party assayers hired & sub-contracted by the Potosi Mint. This Bolivia Cob is a little larger than a US Morgan Dollar. It weighs 17.65 grams. The obverse has the Hapsburg Shield of King Philip IV of Spain.
The reverse has the 1650 date, the crowned countermark , and the castles and lions in their correct positions. The coin was given the higher grade 2 by the professional graders. The grade 2 is based on today's grading standards, the strike, the ability to date the coin as minted in 1650 , and the overall condition of BOTH sides of this shipwreck coin.This silver eight reales Bolivia Cob is listed with No Reserve. The item "Four Digit Date! 1650 Bolivia Cob 8 Reales + Assayer Roas withCrowned Countermark" is in sale since Tuesday, September 11, 2018. This item is in the category "Coins & Paper Money\Coins\ World\South America\Bolivia". The seller is "raymarcompany99" and is located in Springboro, Ohio. This item can be shipped to United States.