The FT reports, via Suburban Guerrilla, on a bizarre request by US cinema distributors to the director of a film version of The Merchant of Venice. Michael Radford was a little surprised when he was asked to "paintbox the wallpaper", as he didn't think wallpaper existed in the 16th century. Closer examination showed that the wallpaper was in fact a priceless Venetian fresco by Veronese.
On the fresco, a cupid. On the cupid, insufficient clothing for their sense of decency.
You couldn't make it up.