I have a '65 K.M. that looks just like your bow. I also have a '70 that has the straight feature stip that terminates on the back of the bow rather than the fadeouts. The '65 has more recurve and draws smoother to my draw length than the '70. The "65 is rated at 46# at 28" and the '70 is rated at 50#. The '65 is much nicer to shoot and seems just as fast as the '70. I really like the design of the earlier K.M.s both functionally and asthetically.