Type II. In bronze, engraved "EXCEPTIONAL SERVICE" on the reverse, measuring 38.2 mm in diameter, replacement ring, original ribbon with brooch pinback, extremely fine.
Footnote: The NASA Exceptional Service Medal is an award granted to U.S. government employees for significant sustained performance characterized by unusual initiative or creative ability that clearly demonstrates substantial improvement in engineering, aeronautics, space flight, administration, support, or space-related endeavors which contribute to National Aeronautics and Space Administration programs. The medal was inherited by NASA from its predecessor organization, the National Advisory Committee on Aeronautics (NACA) and featured the NACA emblem. The original NASA version featured the NASA seal.

