Portugal, Kingdom. A Silver Badge for the 400th Anniversary of Passage to India, 1898

A unique silver badge commemorating the 400th anniversary of the discovery of passage to India, consisting of a 500 reis silver coin minted in 1898 for the occasion, securely set within a silver ring, the reverse of the latter with a raised barrel hinge and horizontal pinback meeting a flattened catch, measuring 35.30 mm in diameter, weighing 19.3 grams, in extremely fine condition.