During Botticelli’s lifetime (c. 1445 – 1510), the Shroud was not yet in its permanent home in Turin cathedral. Rather, it was owned by the Dukes of Savoy, and apparently the Dukes moved it around a bit. It certainly had been on public display at various points. The first public records about the Shroud in the 1380s concern its public display at a church in Lirey, France.
I thought so. That is why I said, ‘Were these representations of Jesus based on fact somehow communicated down through the ages? Previous paintings based on an original’?