1999 Princess Diana Silver Proof Memorial Coin. PCGS PR69, DCAM. Certification number: 389501.69/48450014. True View Holder. Gold Shield Label. Denomination: Five Pounds. Alloy: 0.925 Sterling Silver. Diameter: 38.61mm. Weight: 28.28 grams. Mint: British Royal Mint, United Kingdom. Certificate of Authenticity (COA). Original Government Packaging (OGP). Princess Diana Picture Booklet. Free Insured Priority Mail shipping with Signature Confirmation and free return.