1 Real coin cufflinks 18K gold bezel with braided wire. The cufflinks measure approx 7/8". The coins minted in Potosi, Bolivia for Felipe IV around 1650. The other pair, 1/2 Real coins set in 18K gold bezel. The cufflinks measure approx 5/8". The coins minted in Lima, Peru for Felipe V around 1701. The coins may vary, but all are authentic and come with a certificate.