US Navy Petty Officer First Class-Legalman the book and quill represents records, reference libraries and administrative documents. The Book signifies legal books, court-martial records, and civilian/military law libraries. The Navy Blue Eagle on top of the book and quill and the three chevrons on the bottom also in Navy Blue with V facing down. The Navy Petty Officer First Class- E-6 patch would be post-Vietnam with clean white cotton -synthetic blend twill fabric made for the Navy dress white uniform. Possibly manufactured mid to late 20th century 1970 or 1980 time period. Single patch