SERIES 1957 $1 SC by BLOCKS

Circulation production:

 AA   AB   *A
 BA   BB   *B
 CA        *C
 DA        *D
 EA
 FA
 GA
 HA
 IA
 JA
 KA
 LA
 MA
 NA
 PA
 QA
 RA
 SA
 TA
 UA
 VA
 WA
 XA
 YA
 ZA

                                  Total: 27 regular + 4 star = 31.

Special production: none.

                            Grand total: 31 different, 31 overall.