On Friday, October 23, between 9pm and 9.30pm, two men forced entry to a house in York Terrace East, Regent's Park, NW1. Forty-seven watches with an estimated collective value of around £500,000 were stolen.
They included a number of collector's items, with makes such as Patek Philippe, Vacheron Constantin, Rolex, Audemars Piguet and Jaeger-Le Coultre.
Det Con Alex Caulkett, from Westminster Serious Crime Unit, said: "I would like to hear from anyone who has recently been offered a watch or watches for sale, whose provenance couldn't be properly explained."
This burglary is currently not being linked to any others. Anyone with any information is asked to contact the Investigation Team on 07500 766 462 quoting 6546597/15.
On April 12 this year 125 watches with a retail value of around £200,000 were stolen from the Vintage Watch Store at the Hampstead Antique Emporium. They were all pocket watches, except for two gents' Omega wristwatches.
The Met Police told ATG this week "there is no update in relation to the Hampstead investigation at this time".
More details on watches taken in the Regent's Park burglary appear on page 44 of this week's ATG print publication.