recently i came across a 42 teeth sprocket, solid disc,2 holes, to fit a one peice crank. it is aluminium, painted black on the back side,and on the show side it is black centered,with sort of a machineed bare aluminium, which carrys to the black painted teeth of the sprocket. thre is a hutch logo, in white painted in the black center of the sprocket.can anyone tell me if this is a genuine hutch product for one, year made, value? thank you.