The unexpected departures come roughly two years after Stanley Gibbons acquired the Dreweatts group in November 2013 but only midway through a project to amalgamate some of the blue chip brands of the British antiques and collectables market.
A founding shareholder in The Fine Art Auction Group, Stephan Ludwig negotiated both the merger of Dreweatts and Bloomsbury Auctions in 2010 and the £8.6m purchase in 2014 of Mayfair dealership Mallett where he held the position of chief executive.
Integration of the auction and retail enterprises is now underway with Dreweatts-Bloomsbury using Ely House, Mallett's Dover Street showroom, as both an office space and a London sale venue.
During Ludwig's recent absence at Dover Street, George Bailey, chairman of Dreweatts & Bloomsbury Auctions and founder of online firm The Auction Room, has been responsible for major decision making.
Goldbart, a former stockbroker and coin collector founded Noble Investments in 1993, acquiring numismatic specialists AH Baldwin in 2004 and The Fine Art Auction Group in December 2013. He informed staff of his departure last week.
The departures are not thought to be connected to the financial performance of the company (Stanley Gibbons share price has fallen in recent times) or to issues surrounding integration of disparate brands.
ATG contacted Stanley Gibbons but no one was available to comment at the time of going to press.
