NGC 1973-S Proof Kennedy half 15% off-center and double-struck on-center.
The coin was struck 15% off-center and then double-struck, with the strikes directly on top of each other. Obvious doubling of the design and lettering can be seen on the obverse and reverse. Dramatic, with the coin much larger than a normal half dollar, with the double-strikes causing the coin to expand greatly in size! Rare like this.
PF68 and with the star designation for superior eye-appeal. White surfaces, and mirrored fields with frosted devices.