A confiscation hearing for five men who pulled off a £325,000 jewellery raid has been adjourned to try to find out what happened to the stolen goods.
The men used sledge hammers to smash the windows of the Ernest Jones shop on Oxford Street on 5 September 2009.
They were jailed in July after admitting conspiring to rob the central London jewellers.
But the haul of 46 watches they stole has not been recovered, Southwark Crown Court heard.
Inquiries into the thieves' assets have so far failed to establish where the proceeds went.
A sixth man has remained on the run since the raid.
"The point of confiscation is to deprive people of the fruits of their crime," Judge Peter Testar said.
"Something has happened to these watches - they haven't just evaporated."
Matthew Pitt, 26, of Fleet Road, Camden, north London, and Craig Wallace, 22, of Sussex Way, Islington, north London, were jailed for six years each for their roles in the raid.
Kether Whatley, 24, of Clock View Crescent, Islington, north London, was jailed for five years.
Reed Roberts, 19, of Cubitt Street, Camden Town, and Anthony Leader, 20, of Sidmouth Street, Camden Town, were both jailed for four years.
The judge requested that statements were produced on behalf of the defendants by 7 January, with the next hearing scheduled to take place on 28 January.