SERIES 1950B $5 FRN by COMPLEX BLOCKS Circulation production: AA. DA. HA. IA. JA. KA. AB. CB. DB. EB. FB. HB. LB. BC. FC. GC. LC. BD. GD. A*. B*. C*. D*. E*. F*. G*. H*. I*. J*. K*. L*. Total: 19 regular + 12 star = 31. Special production: none. Grand total: 31 different, 31 overall.