2021 (55¢) Nuclear Physicist - Dr. Chien-Shiung Wu Mint Plate Block of 4

United States #5620 (55¢) Raven Story Anniversary Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5543 (55¢) Love - Multicolored Letters Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5614 (55¢) Commemorative - Mystery Message Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5626 (55¢) Missouri Statehood Anniversary Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5593 (55¢) World War II "Go for Broke" Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5555 (55¢) Black Heritage - Playwright August Wilson Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5556 (55¢) Lunar New Year - Year of the Ox Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5608 (55¢) USA Baseball All-Star - Yogi Berra Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.

United States #5635 (58¢) Happy Birthday Mint Plate Block of 4 Mint condition, never hinged. *Plate number and position may vary.