Tik-tok moved by clockwork, and was made all of burnished copper.
In the first, the implements are rather of copper than of bronze, tin being absent or in small quantities (2 to 3%); the types are common to Syria and Asia Minor as far as the Hellespont, and resemble also the earliest forms in the Aegean and in central Europe; the pottery is all hand-made, with a red burnished surface, gourd-like and often fantastic forms, and simple geometrical patterns incised; zoomorphic art is very rare, and imported objects are unknown.
The eggs are very remarkable objects, curiously unlike those of other birds; and their shell looks as if it were of highly-burnished metal or glazed porcelain, presenting also various colours, which seem to be constant in the particular species, from pale primrose to sage-green or light indigo, or from chocolate brown to pinkish orange.
Just like burnished copper.
In medieval illumination it furnished, as a glaze upon burnished tinfoil, a cheap and effective substitute for gold.