1958 was the first year for the Palomino...it was 66" only and had a leather wrapped grip. 1959 they made all three sizes...62, 66, and 69 inch, still had leather wrap handle...green glass.
1960...had green glass on belly, red glass on back...both parallel and transverse lamination in the riser. No leather grip.
1961...had white limbs, and a lamination on belly of riser. Still three sizes..models 970, 971 and 973.
1962..63..had white limbs, and overlays on belly of riser. Dropped 69" and went to 68", 66" and 62".
1964/65..model numbers changed to 722 and 724...68" and 66". White glass, and 64 was first year for riser caps...laminations on tips of caps.
1966...model changed to 725/726. White glass, Pistol grip with thumb rest Solid Brazilian Rosewood handle with contrasting strips of white holly; 5 laminations on back with one going down the length of the window; 5 laminations on front on heel of handle.
I don't have any information for 1967 and 68, and there were no Palomino bows after 1968.