An etching created by Rembrandt more than 350 years ago has been deemed to be too explicit for open viewing by international auction house Christie’s.

Parental advisory labels date back to the 1980s. They exist, in part, to alert consumers to the presence of profanity, explicit discussion of sex and sexuality and graphic violence.

“The French Bed,” drawn by the Dutch old master in 1646, is up for sale at the auctioneer’s London branch, but it can only be viewed online by those who click past a content warning.