This page describes the various special (aka Fancy) serial types that the united states banknote checker tool looks for on your U.S banknotes.

Serial types listed above will have an example and statistics available based on a maximum print-run of 99,999,999 notes, serial number 00000000 is ignored as this is generally reserved not for circulation.

If you collect a serial type not listed above and would like me to add it to the checker tool please Request A Type below.

All unique digit serial numbers will not have a double up of any of the digits shown in the serial number.

Binary serial types consist only of 2x different digits.

Serial numbers that consist of only ‘0’ and ‘1’ digits are known as True-Binary serial types.

Birthday serial are a serial number that can be read as a date, they are generally collectable if they happen to match a famous birthday or a significant date.

The checker tool identifies birthday serials with the following formats:

MM / DD / YYYY

YYYY / MM / DD

*Note* The checker tool limits birthday serials from the year 1776 though to today, it does not identify earlier dates or future dates however these serials may still be sought after.

Bookend serial numbers have a matching block of digits on either end of the serial number.

Broken ladder serial types consist of all the digits of an 8-Digit ascending or descenging ladder, however the digits can be in any position and do not need to have a full run in consecutive order.

The higher the serial number the more desirable a note is for the high numbered serial type.

The following high numbered serial types are:

Single Digit: Serial # > 99999990

Double Digit: Serial # > 99999900

Triple Digit: Serial # > 99999000

Quad Digit: Serial # > 99990000

Ladder serial types are where each following digit is either consecutively increasing by 1 number, or consecutively decreasing by 1 number.

The following ladder types are defined below:

Ascending Ladder (Asc.): A streak of consecutive increasing digits, ending with a maximum digit of ‘9’.

Descending Ladder (Desc.): A steak of consecutive decreasing digits, ending with a minimum digit of ‘0’.

Run-Through Ladder: A streak of consecutive or decreasing digits ignoring the maximum or minimum digit break.

*Note* A block of ascending or descending ladder serial type can be at any position of the serial number if less than an 8-Digit type

The lower the serial number the more desirable a note is for the low numbered serial type.

The following low numbered serial types are:

Single Digit: Serial # < 10

Double Digit: Serial # < 100

Triple Digit: Serial # < 1,000

Quad Digit: Serial # < 10,000

Near-Solid serial types are 1 or 2 digits away from being a SOLID 8-Digit type.

The off-solid digit(s) can be located at any position throughout the serial number.

Radar serial types have a block of digits that read the same from left to right / right to left.

The block of digits can be at any position throughout the serial number if less than an 8-Digit type.

Repeater serial types consist of 2x matching blocks of digits.

The blocks of digits can be at any position throughout the serial number if less than an 8-Digit type however must be adjecent to eachother.

Rotator serial types are serial numbers that can be read upside-down.

Rotator serial types are fairly controversial in what qualifies as collectable.

The following rotator types are defined below:

Soft-Rotator: Consists only of digits ‘0’,’1′,’6′,’8′ or ‘9’, digits can be in any position throughout the note.

Soft-Rotator (Strict): Consists only of digits ‘0’,’6′,’8′ or ‘9’, digits can be in any position throughout the note.

Super-Rotator: Consists only of digits ‘0’,’1′,’6′,’8′ or ‘9’, Must read as the same serial number when read upside down.

Super-Rotator (Strict): Consists only of digits ‘0’,’6′,’8′ or ‘9’, Must read as the same serial number when read upside down.

*Note* Strict Rotators do not include the digit ‘1’ as the font does not look identical when upside down.

Semi-Solid serial types consist of only 2 digits, starting and ending with unbroken streaks of either digit.

*Note* The larger streak block can be of either side of the serial, eg: 11222222 or 11111122 are both (2-6 Digit) types

Solid serial types are made up of serial numbers with an unbroken streak of matching digits.

The unbroken streak can be at any position throughout the serial number if less than an 8-Digit type.

To request a serial type and stats to add to the checker tool please comment below.

Please include an example of the serial type you are requesting and preferably a brief description that may explain what makes it collectable.