10 Rarest Types of Dollar Bills

Money is a fickle thing. Save enough and you’ll be rich, but then it becomes worthless sitting in a bank. Spend it all and give it worth, but also have nothing left to fall back on. The only straightforward thing about money, it seems, are the values listed on it. You can say with confidence that a one dollar bill is worth less than a $20 one. Or, can you? As it turns out, the serial number on a dollar bill can be the difference between a buck and $7,000. At their most basic, the randomly selected pattern of eight numbers and two letters on a banknote serves as a way to track the dollar from production to circulation. For collectors, these serial numbers can enhance the value of any tender, given that they have the right pattern. Read the list below to discover the rarest serial numbers that give a real bang for your buck.

Binary Dollar Bill

Odds of finding one: 1 in 8,749
Number of occurrences in 9,999,999 run: 11,430
Worth: $10 – $50

Binary serial numbers consist exclusively of the numbers one and zero. The value of a binary dollar depends on the pattern, with some collectors seeking particular combinations over others. In total, all binary dollars are worth some amount of money as they are generally rare. Some collectors consider two repeated numbers that are not one and zero to be binary as well, but most define these dollars as “repeaters.” 

Repeater

Odds of finding one: 1 in 10,010
Number of occurrences in 9,999,999 run: 9,990
Worth: about $100

A repeater is fairly self explanatory. It describes a note that has a serial number with any sort of repetitive pattern. These patterns can include any kind of numbers in any sort of arrangement, as long as they meet the basic qualifications. As a result, repeater notes aren’t worth very much because, although rare, they are a lot easier to come by. With that said, they’re still considered collectibles. 

Radar

Odds of finding one: 1 in 10,010
Number of occurrences in 9,999,999 run: 9,990
Worth: about $25, but could be more

A radar is a note with a serial number that reads the same backwards and forwards; it’s a numerical palindrome, so to speak. The term radar itself is also a palindrome, hence the name. While it only shows up once every 10,000 times, collectors don’t consider it rare in comparison to other serial patterns. However, radars were less common pre-1958 so a radar bill dated from that time might be worth a bit more. In general, seek out radars with other interesting elements to get more money from collectors and auctions.

Seven-of-a-Kind Dollar Bill

 

Odds of finding one: 1 in 138,889
Number of occurrences in 9,999,999 run: 720
Worth: up to $500

A seven-of-a-kind serial number has seven numbers repeated. It is significantly rarer than the 01 binary with only 0.7 percent of dollar bills with this pattern. Five-of-a-kind dollar bills are also worth some money, but significantly less at only around $20 to $30.  The number seven is considered lucky in several cultures and religions, which could also play a role in its value. 

Seven-in-a-row

Odds of finding one: 1 in 555,556
Number of occurrences in 9,999,999 run: 180
Worth: About $200

In contrast to a dollar with a seven-of-a-kind serial number, seven-in-a-row must have a repeated number without any breaks. So, for example, instead of 77717777, it would have the one either at the beginning or end of the series. Since serial numbers are determined randomly, the likelihood of finding a dollar bill with seven of the same numbers all in order is quite low. One seller managed to impress even further, finding a twenty dollar bill with seven sevens all in a row. 

Double Quad

Odds of finding one: 1 in 1,111,111
Number of occurrences in 9,999,999 run: 90
Worth: Inconclusive

With the double quad, the dollar bill enters more patterned territory. Unlike a binary serial number, which can have two numbers in any random arrangement, a double quad has one number repeated at the beginning and a different number repeated at the end. Due to the specificity required for this particular serial number, double quads are extremely rare. The range in values for this type of dollar bill is astronomical with some Ebay sellers asking for $20 and others asking for $999.

Radar Repeater

Odds of finding one: 1 in 1,111,111
Number of occurrences in 9,999,999 run: 90
Worth: About $94

A radar repeater is a combination of the radar and the repeater serial number combinations. In essence a radar repeater serial number has a pattern that’s repeated in the first four and last four digits. Examples include: 98899889, 72277227, etc. These could also double as binary dollar bills if the patterns involve one and zero. 

Super Radar

Odds of finding one: 1 in 1,111,111
Number of occurrences in 9,999,999 run: 90
Worth: About $80

The super radar is a subcategory of the radar. In this pattern, the first and last digits match and sandwich six repeating and/or patterned numbers. For example, 20000002  and 8455548 are both super radars. Interestingly, you have a similar chance of finding this type of bill as you do a radar repeater and a double quad. This shows a possible pattern within patterned serial numbers. 

Super Repeater

Odds of finding one: 1,111,111
Number of occurrences in 9,999,999 run: 90
Worth: About $100

In a super repeater, the first two digits in a serial number are repeated throughout the sequence. Super repeaters, like most repeaters, range a lot in value. Some repeaters aren’t worth much, while others can cost hundreds of dollars. This shows that, although rare, these kinds of dollars are still not the rarest possible. Either way, though, they’re definitely more valuable than their intended price! 

Solid

Odds of finding one: 9
Number of occurrences in 9,999,999 run: 1 in 11,111,111
Worth: $500, but can go into the thousands

Solid serial numbers are extremely rare and cost at least $500. A dollar with a solid pattern has the same number repeated in the serial number. Their value increases as the number does. So, for example, a solid serial number of nines is more valuable than one with repeated twos. In fact, solid nines are the most valuable version of the solid because modern serial printing only goes up to 96000000.  A buyer might pay even more if the letters in the serial number match as well. 

Ladder

Odds of finding one: 1 in 16,666,667
Number of occurrences in 9,999,999 run: 6/1
Worth: $5,000 +

The ladder dollar bill is the rarest dollar ever. There are two categories within the ladder serial number because a true ladder is so rare, only occurring once in every 96 million notes. A ladder is a serial number that follows the standard numerical pattern of one through eight. A true ladder is 12345678 and, as noted, difficult to find. Variations of the ladder pattern include numbers in order that don’t start with one such as, 00123456 or 034567. Additionally, ladders can be backwards so the numbers are in reverse order. Both of these variations are more common and less valuable than the real thing. 

This article originally appeared on Rarest.org.

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