Kodiak Hunters production didn't start until the latter part of 1967. This is why the first year KHs are referred to as 1967 1/2. The first three year's serial numbers are 7,8,9 meaning 1967,1968,1969,respectively. The K designates 1970-1977. The 1967 1/2 were the only year these bows were 58". And yes the coin is a help to narrow the year down but which exact year is practically a no-go. The blue stripe/green glass can be a 1976 only or a 1976/1977. Look at the color of glass and micarta color on the belly side. This can help with a year approximation along with which coin a bow has.