The widow of fisherman can't stop knitting

Daguerreotype, the first photographic technique using mercury. —On the back of the silvered glass plate, which is polished like a mirror. The portrait of the subject appears as if it is shimmering, reproduced with astonishing precision, down to the smallest hair. Perhaps the magical power of the noble metal "silver" also helped. People at that time were awed and amazed by these beautiful and fragile silver photographs. The encounter between two brothers and the traveling Daguerreotype photographer. A secret agreement between the two submerged in mercury film... A story of those who lie at the bottom of the liquid mirror of memory.

(Source: Gettosha, translated)