In The Early 1970's the US Navy proposed to refit the USS Boston and her sister, the USS Canberra, for further service into the 1990's. Budget restrictions prevented this and instead led to their scrapping. Had they been serving, their seals would have been re-designed in the 1980's to follow the then new standardized template which, is still in use today. This is my take on what her seal may of looked like had history taken a different route.