SERIES 1977 $20 by BLOCKS

Circulation production:

 AA   BA   CA   DA   EA   FA   GA   HA   IA   JA   KA   LA
      BB   CB   DB   EB        GB             JB   KB   LB
      BC             EC        GC                       LC
      BD                       GD
      BE
      BF
 A*   B*   C*   D*   E*   F*   G*   H*   I*   J*   K*   L*

                                 Total: 28 regular + 12 star = 40.

Special production: none.

                            Grand total: 40 different, 40 overall.