Dated 1959 AD. Proof. Obv: profile bust with ELIZABETH II REGINA legend. Rev: crowned arms with SOUTH AFRICA SUID AFRIKA 2 1/2s legend and date. KM# 51. (40.35 grams with capsule"). ("). This lot has been authenticated and graded by a specialist independent coin grading service and is encapsulated with a unique reference number that is traceable through the records of that organisation. Those represented include: ANACS - American Numismatic Association, USA (Sheldon scale) ICCS - International Coin Certification Service, USA (Sheldon scale) CGS - Coin Grading Service UK, London (grading scale of 001 to 100) NGC - Numismatic Guaranty Corporation, USA (Sheldon scale) PCGS - Professional Coin Grading Service, USA (Sheldon scale) Each coin is identified with country/state of origin, reign, denomination and date, sometimes citing a standard catalogue reference number. For comparison, a section of a concordance table is shown below which correlates the traditional English grading descriptions with CGS and Sheldon scales. The certified grade is given with the English equivalent in brackets. CGS: UK: Sheldon: 92 Almost FDC MS 67 91 Almost FDC MS 66-67 90 Near FDC MS 66 88 BU-Near FDC MS 65-66 85 Choice UNC-BU MS 65 82 Choice UNC MS 64-65 80 Choice UNC MS 64 78 Uncirculated MS 63-64 75 UNC/Almost UNC MS 62-63 70 Almost UNC MS 60-61 65 Good EF MS 60-61 60 Extremely Fine AU 58-MS 60 55 Near EF AU 55 50 Good Very Fine AU 55