Complementary Numbers
Complementary numbers are two or more banknotes with serial numbers that are related to each other. Collectors value banknotes with identical, similar, or running serial numbers across different notes because they show a clear connection and are harder to find together. These numbers suggest continuity or a pattern, which conveys a sense of order and meaning. When paired or grouped, they stand out as intentional sets rather than random pieces, making them more appealing to keep or trade.
Running Numbers
Running numbers are two or more banknotes with serial numbers that go up one after another. For example, a 2-piece running number set could be 450871 and 450872. A 50-piece running number set might go from 680100 to 680149, and a 100-piece set could go from 720000 to 720099. These notes are often collected together because they follow a clear sequence and are harder to find as a full set once separated.
O5 Three-piece run
PMG 64, no remarks
Lucky number
Market Price: $630
(2024)
B20 Five-piece run
Ungraded, brand new
Lucky number
Market Price: $150
(2024)
S1 Twelve-piece run
Ungraded, brand new
Market Price: $24
(2024)
S2 Fifty-piece run
Ungraded, brand new
Market Price: $180
(2024)
S2 Four-piece run
Ungraded, brand new
Market Price: $12
(2024)
S5 Nine-piece run
Ungraded, brand new
Market Price: $72
(2024)
S10 Nine-piece run
Ungraded, brand new
Market Price: $108
(2024)
S50 Six-piece run
Ungraded, brand new
Lucky number
Market Price: $405
(2024)
S500 Two-piece run
PMG 58 EPQ
Lucky number
Market Price: $1,400
(2024)
P2 Eight-piece run
Ungraded, brand new
Leopard number, lucky number, mother of money
Market Price: $40
(2024)
P10 Eight-piece run
Ungraded, brand new
Market Price: $112
(2024)
CIA40 Two-piece run
Ungraded, brand new
Auspicious number
Market Price: $92
(2024)
SG50-10 Eight-piece run
Ungraded, brand new
Market Price: $168
(2024)
Identical Numbers
Identical numbers refer to two or more banknotes that have exactly the same serial number, but come from different series, denominations or prefixes.
Cross-series, denomination & prefix identical 16 pieces
Ungraded, brand new & lightly used
Near-golden numbers
Market Price: $2,070
(2024)
Cross-series identical pair
Ungraded, lightly & heavily used
Auspicious numbers
Market Price: $222
(2024)
Cross-prefix identical trio
Ungraded, brand new
Lucky number
Market Price: $33
(2024)
Cross-denomination identical pair
Ungraded, brand new
Near-golden number
Market Price: $81
(2024)
Cross-denomination identical pair
Ungraded, lightly used
Leopard numbers
Market Price: $112
(2024)
Cross-denomination identical trio
Ungraded, brand new or lightly used
Auspicious number
Market Price: $1437
(2024)
Cross-prefix identical pair
Ungraded, brand new
Special-edition note, lucky number
Market Price: $132
(2024)
Similar Numbers
Similar numbers are banknotes with serial numbers that share a related pattern of digits, such as 166160, 166016, and 101666.
Cross-denomination identical & similar pairs
Ungraded, brand new
Auspicious numbers
Market Price: $202
(2024)
Cross-denomination & prefix similar trio
Ungraded, brand new to well used
Auspicious numbers
Market Price: $250
(2024)
Cross-prefix similar quartet
Ungraded, brand new
Near-golden & radar number
Market Price: $48
(2024)
Cross-denomination & prefix similar quartet
Ungraded, brand new to heavily used
Auspicious numbers
Market Price: $372
(2024)
Cross-series & denomination identical & similar quintet
Ungraded, brand new to heavily used
Near-golden, auspicious & lucky numbers
Market Price: $279
(2024)