SERIES 1988A $20 by BLOCKS

Circulation production:

 AA   BA   CA   DA   EA   FA   GA   HA   IA   JA   KA   LA
 AB   BB        DB   EB   FB   GB   HB        JB        LB
 AC   BC        DC   EC   FC   GC                       LC
 AD   BD        DD             GD                       LD
      BE                       GE                       LE
      BF                       GF                       LF
      BG                                                LG
      BH                                                LH
      BI
      BJ
      BK
      B*   C*             F*   G*                  K*

                                  Total: 46 regular + 5 star = 51.

Special production: none.

                            Grand total: 51 different, 51 overall.