A rare Cadbury prize item tied to a 1983 promotion sells for £123,000, about 43 years after it was created, according to reporting. The item is linked to certificates that entitle the finder to a 250g decorative Cadbury egg.

The promotion involves multiple certificates placed across Britain in perspex caskets, each accompanied by handwritten notes on parchment. The Daily Mail describes how a dozen such certificates were buried as part of the 1983 contest, with the promise of redeeming for the decorative egg.

While the outlet focuses on the high sale price and the long gap between the contest and the sale, the core facts described across the information provided are the contest’s structure (caskets, certificates, and notes), the number of certificates, and the specific egg size promised to whoever finds a certificate. The reports do not indicate additional competing details from other outlets in the supplied text.