KOLKATA: When Rs 653 crore worth of foreign direct investment -the “largest ever,“ according to Amit Mitra , state finance and industry minister ­ lands in the state coffers just days before Bengal calls the world to come and invest in the state, it serves as a beacon for all others to follow suit.Not only that, when such investment, which is just the first tranche, kind of ends a decade-old dispute over one of Bengal's erstwhile showcase projects, it surely becomes a game changer and maybe a harbinger for better things to come.Credit for making the impossible possible goes to Mitra and Purnendu Chatterjee of the New York based The Chatterjee Group (TCG), who has just purchased 62 crore shares of the beleaguered Haldia Petrochemicals Ltd (HPL) at Rs 25.10 apiece, as part of a Rs 1,300 crore deal with the state government.“We worked it all out here in this room silently ,“ Mitra told ET in an exclusive interview.Chatterjee, once a George Soros associate, was the poster boy of Indian economic liberalisation and more importantly of the Marxist swing-over to capitalism under Jyoti Basu in the early 90s. But thereafter with crony capitalism, working capital shortage, politics and ego fights ­ HPL, for all practical purposes, was taken as almost dead by all and sundry . Except that, Chatterjee never lost hope.Practically banished from the corridors of power, Chatterjee is now on the way to becoming the poster boy of Mamata Banerjee's consistent efforts to ensure that Bengal returns to its erstwhile capitalistic ways. TCG has now become the single largest shareholder of HPL with the state's holding falling to 35%, in a major transition.The state government expects this development to create a positive buzz among investors about the state's governance structure. “There are people who told me that they are happy doing business in West Bengal and we will invite them to speak at the summit,“ Mitra said.“In the forthcoming summit, if somebody says something good about his actual experience in Bengal, it will immediately send a message to a whole lot of others and will inspire them to come and do business in Bengal,“ the minister said. “In fact, we will let them do the talking,“ he said.The state has already earned praise from Reserve Bank of India for doubling its own-tax revenue in four year to Rs 40000 crore in 2013-14. Its gross value added is projected at 10.48% for 201415 as compared with 7.5% for the country as a whole and the state is going at it hammer and tongs ever since it started the global summit campaign.