There are banknotes that have an unusual, special o fancy serial number, which its rarity make them more valuable, and depends on the collector's desire. This fancy serial numbers can be combined which could make more valuable.
The amount varies by serial range. The most known category for fancy serial numbers with a referencial estimated amount of pieces are:
Category | 1-999.999 (6 digits) | 1-9.999.999 (7 digits) | 1-90.000.000 (8 digits) |
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High serial number | 1041 (all), 520 (Level 1), 338 (Level 2), 151 (Level 3) and 32 (Level 4) | 3312 (all), 1833 (Level 1), 1042 (Level 2), 379 (Level 3) and 58 (Level 4) | 10000 (all), 6000 (Level 1), 3000 (Level 2), 900 (Level 3) and 100 (Level 4) |
Low serial number |
Radar serial number | 999 pieces | 9999 pieces | 8999 pieces |
Rotator serial number | 63 pieces | 127 pieces | 191 pieces |
Repeater serial number | 99 pieces (2 digits), 999 pieces (3 digits) | - | 89 pieces (2 digits) |
Binary serial number | 2790 pieces | 5670 pieces | 10,288 pieces |
Ternary serial number | 64,800 pieces | 216,720 pieces | 625,968 pieces |
Solid serial number | 9 pieces | 9 pieces | 8 pieces |
Many repeated digits serial number in-a-row | 2430 pieces (4 digits), 180 pieces (5 digits) | 29,160 pieces (4 digits), 2430 pieces (5 digits), 180 pieces (6 digits) | 26,244 pieces (5 digits), 2187 pieces (6 digits), 163 pieces (7 digits) |
Many repeated digits serial number of-a-kind | 12,150 pieces (4 digits),540 pieces (5 digits) | 255,150 pieces (4 digits), 17,010 pieces (5 digits), 630 pieces (6 digits) | 367,416 pieces (5 digits), 20,412 pieces (6 digits), 649 pieces (7 digits) |
Date or Birthday serial number (1900-2050) | - | - | 55,266 pieces (day-month-year), 55,266 pieces (month-day-year), 55,266 pieces (year-month-day) |
Ladder serial number | 200 pieces (circular), 320 pieces (non-circular) | 0 piece (circular), 640 pieces (non-circular) | 630 pieces (circular), 1152 pieces (non-circular) |
Doubles serial number | 810 pieces | - | 6561 pieces |
Bookend serial number | 9999 pieces (2 digits), 999 pieces (3 digits) | 99,999 pieces (2 digits), 9999 pieces (3 digits) | 899,999 pieces (2 digits), 89,999 pieces (3 digits), 8999 pieces (4 digits) |