It was the third flat Aztec monolith to be discovered by accident in the vicinity of the Templo Mayor, along with a 24-ton black basalt Sun Stone (excavated in 1790) and an 8-ton Disk of ...

Other specifications include a 40.7 mm case made from 18k red gold and grade five titanium, a black leather strap ... the technique to reproduce the Aztec Sun Stone. As for the mechanics, the ...