While a new mural on the subject of surveillance and wire-tapping that many speculate is the work of British street artist Banksy has surfaced near the Government Communications Headquarters in London, another mural that is definitely by Banksy—because an image of it was posted on his website—has yet to be located. Though street art sleuths typically track down Banksy’s works within hours of the first images appearing online, the latest work, dubbed Mobile Lovers, has still not been discovered, the Telegraph reports.

The very subtle mural shows a man and a woman embracing in a doorway, their faces illuminated by the cell phones each is looking at behind the other’s back. It’s unclear what will take longer: For intrepid street art lovers to discover its location, or for an opportunistic property owner to sell it to a street art dealer.

Banksy’s Mobile Lovers (2014) in situ.
Via Banksy.co.uk.