I have a picture of Fred Bear with his lion that he shot in 1965 with a Kodiak and an 8-arrow bow quiver with lower spring arm. It was common for him to test equipment that was not yet on the market. The Kodiak has the laminations and caps as well. The earliest picture I found with him using an 8-arrow quiver was in 1959 when he shot his first Kodiak Bear.
Although, the dimples indicate the four-arrow model, I am not sure when it was discountinued and replaced by the 8-arrow and whether they came out with the spring arm before the lower bracket and screw mount. I seem to recall there were a few years when the bolt on model was not available. Although, there may have been some overlap. Does anyone know when the 4-arrow model was discontinued, and the 8-arrow with the lower bolt-on model was introduced? Was it before or after the spring arm 8-arrow model?
I realize this is a separate question and may not have anything to do with the factory screw in the 1964 Kodiak.