Made for the British Gurkhas if I not mistaken and probably used during both world wars. Contact Atlanta Cutlery as they sell real Kukris, some which date back to the late 1800s. Is the blade about 1/4" to 3/8" thick? They varied as these are hand forged blades. I am not an expert on what those letters and numbers mean, but the workmanship looks authentic. I don't think it would be a fake as there are many very old Kukris for sale. They are typically not very expensive. As nice as this one looks it may have been an officer's.
http://www.atlantacutlery.com/