Bulgaria: 100 Leva Zlato ND(1960) P. 20c with red overprint "Series A" and red ornament overprint in center, but with no serial prefix. This type of note is only known in combination with prefix letter "A" but maybe this type is only missing in the Pick listing or a contemporary forged overprint on a real note. We are not sure about that. The note is used with center and horizontal fold, small border tears at left and right, no holes, still strongness in paper and original colors, condition: F+.