This is a 29.3g (a fraction under 1oz) solid sterling silver ingot to commerate the wedding of Prince Charles and Lady Diana Spencer in 1981.The front of the ingot (as seen in the photos) has a Sheffield assay hallmark with the makers stamp RC and the letter G indicating it was struck in 1981. Accompanying this are two silhouettes of Diana and Charles.The reverse of the ingot is engraved "Wedding Celebration Ingot H.R.H Prince of Wales to Lady Diana Spencer 29.7.81". It measures 40mm x 12mm x 5mm with a necklace loop attached. This is a lovely piece of royal memorabilia in excellent conditiont that has certainly stood the test of time.