Special Serial Number Notes
Solids
Description
Probabilities: 9 / 9999999 or 1/ 1 111 111
Number formed with the repetition of a single digit. The solid number is also a radar and a single digit Repeater.
Example(s)
1 dollar 1954
5 dollars 2006
10 dollars 1954
Millions
Description
Probabilities: 9 / 9999999 or 1/ 1 111 111
A million number note is formed with a digit followed by six zeros (0).
Rotators
Description
Probabilities: 127 / 9 999 999
Rotators are numbers where you have to imagine a rotational axis at the central digit position.
The only digits that can be involved in a rotator are : 0, 6, 8 and 9. The central digit can be a zero (0) or a height (8).
Note that the one (1) may also be accepted by some collectors as a possible digit in a Rotator.
Example(s)
5 dollars 2004
20 dollars 2008
Radars
Description
The serial number can be read in one way or the other, with the same number as the result. A radar is also called palindrome or mirror.
Serial number notes have 7 digits (excluding 1979 $ 5 and $ 20). For the radar, there is a central digit which acts as if it were a mirror because there are 3 digits to the left and 3 right.
Posibilities to find a Radar : 9999 / 9999999 (without #0000000) or
1 / 1 001.
Single digit radar(s)
Possiblity : AAAAAAA
Probabilities: 9 / 9999999 or 1/ 1 111 111
The single digit radar is also called solid because the serial number is formed with the repetition of only one digit.
Example(s)
See Solids.
Radar(s) with two different digits
Possibilities : AAABAAA, AABABAA, AABBBAA, ABAAABA, ABABABA, ABBABBA, ABBBBBA
Probabilities : 630 / 9999999 or 1/ 15 873.
Example(s)
1 dollar 1937
5 dollars 2006
20 dollars 2005
Radar(s) with three digits
Possibilities : AABCBAA, ABBCBBA, ABCCCBA, ABACABA, ABCACBA, ABCBCBA, ACBCBCA
Probabilities : 4320 / 9999999 or 1/ 2 315.
Example(s)
20 dollars 1991
20 dollars 2005
Radar(s) with four digits
Possiblity : ABCDCBA
Probabilities : 5040 / 9999999 with three digits 1/ 1 984
Example(s)
5 dollars 2006
20 dollars 2005
50 dollars 2004
Ascending Ladders
Description
Ascending ladders serial numbers have 7 consecutive digits. The number zero (0) can be regarded as a zero (0) or a ten (10).
Descending Ladders
Description
Descending ladders serial numbers have 7 consecutive decreasing digits. The number zero (0) can be regarded as a zero (0) or a ten (10).
Repeaters
Description
Repeaters serial number notes have a repetition of the same number(s).
Ultimately, possibilities ABCDEAB (5 digits) and ABCDEFA (6 digits) could be seens as a repeater, but the demand for such number is too low to keep them.
Single digit repeater(s)
Possiblity : AAAAAAA
One digit repeated 7 times. It's also a single digit radar and a solid.
Example(s)
Voir Solide.
Repeater(s) with two different digits
Possiblity : ABABABA
It's also a radar with two diffrent digits.
Repeater(s) with three different digits
Possiblity : ABCABCA
Repeater(s) with four different digits
Possiblity : ABCDABC
Low serial numbers
A serial number under 1000.
Example(s)
2 dollars 1974
5 dollars 1986
You can search with your serial numbers to find if you have a special one.
