I recently bought a Nikon D200 from a website. However the camera did not come with a manual and says 'Made in Thailand'. The box has two letters (hk) next to the D200. I called Nikon USA and asked if it is an original one(from the serial number). They mentioned that its original but made for Hongkong market and will not cover warranty(1 yr) in US. Has anyone had experience with grey market Nikon D200? Should I worry about the warranty and return the camera?