The Stanley Gibbons Group plc (AIM:SGI) the world's oldest stamp dealer, is in talks with Chinese investors about the potential sale of the British company, an official said on July 31, 2017. The Stanley Gibbons put itself up for sale in June after receiving what it called a "possible" offer from Disruptive Capital Finance, led by stamp enthusiast Edi Truell. he two companies have been in discussion for some time, but no progress has been made so far.