The Vintage Oil, Chemical and Atomic Workers International Union (OCAW) Tie Bar is a unique and collectible item that represents the history and significance of the trade union. This tie bar would have been worn by members of the OCAW to show their pride and affiliation with the organization, which was dedicated to representing the interests of workers in the oil, chemical, and atomic industries. It serves as a symbol of solidarity and unity among members and is a piece of historical memorabilia that holds value for collectors and enthusiasts of fraternal organizations.