Rarest Types of Dollar Bill

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. 

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. 

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 

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 

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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.  

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 

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, 

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