Seattle Seafair 2 Pin Lot for the Greater Seattle Hydroplane Gold Cup Race. One is dated 1967. The other, with the hydroplane, looks similar to the pins from the mid-1950s but is not dated. Since both pins feature the Space Needle, I would guess the second one is from the 1961 - 1962 - 1963 - 1964 - 1965 - 1966 range.