THE NEW (MUMBAI ?) MARK
It did finally happen:
Birmingham Assay Office have an Indian company (AnchorCert India) conducting assay and hallmarking in Mumbai for precious metal goods destined for sale throughout the UK and EU. However, it would appear this mark will also cover any further expansion of the BAO's overseas operations and thus will not identify Mumbai alone.
A second office, at Jaipur, I believe has now been opened.
(The Sheffield Assay office opened the first overseas sub-office, which was located in Malpensa, Italy in 2014. In response to respresentations made by Sheffield Assay Office, the BHC (British Hallmarking Council - a semi-autonomous body, funded by the four UK Assay Offices) approved the use of the Sheffield Assay Office mark (the rose) in Malpensa on 7 April 2014. The Malpensa sub-office is no longer operating.)