when you put a picture of it .. it is identical to the one from Bernie's ebay link... I am alsmot sure it is the same manufacturer. What are my clues ? .. first of all .. 1-the paint inside the 300ZX, 2-the way the 300ZX was engraved, 3- the contour of key in the round section is not smooth 4- one of the grooves is shorter than the other ...etc