By Reuters MUMBAI/BENGALURU, Sept 14 (Reuters) – Physical gold buying waned in major Asian centres this week as bullion prices rebounded from recent lows, with dealers in India offering the metal at a discount for the first time in over a month as an uptick in local rates moderated demand. In India, the world’s second-biggest consumer of the metal after China, gold was being sold at a discount of up to $2 an ounce over official domestic prices this week, compared with a premium of $1 last week. The domestic price includes a 10 percent import tax.