What To Look For: Banknotes In Circulation

A binary note has only 2 numerals in the serial number (ie: all 5's and 7's), a solid has only 1 numeral in the serial number (all 7's), a radar has a serial number sequence that is reflected half way through the number (ie: 98655689), low serial numbers depend on the series and number of digits in the number, in US currency anything under 1000 is generally considered low (IE: 00000299) the lower the number the more valuable. a repeater repeats a sequence in the serial number (IE: 22442244). Many countries banknotes do not have a year on the note reflecting when the note was printed, rather the year may indicate when the design was last changed, the signature on the note is often the best means of roughly telling when a note was printed if the date does not reflect that information.

Also look for errors, such as missing printings, inverted printings, gutterfolds, overlaps ect.

I think MoR might have meant 099999.

Others that may be worth more than face are one off solid eg: 099999, 999990 etc if you get the drift.