Identifying signs in banknotes

Shalom.

A banknote was found folded into eight parts. Is this considered an identifying sign (siman)?

Shalom u’vracha.

A banknote folded in two is not considered an identifying sign. Folded in four is sometimes a sign (if the length is folded twice in the same direction, it is not considered a sign, as this is the usual way people fold it; but if one fold is lengthwise and the other widthwise, that is considered a sign). Folded into eight is certainly an identifying sign. One must put up notices at the place where it was found, and if within a week no one calls, one may use the money, while recording all the details, until Eliyahu comes.

Shulchan Aruch, Choshen Mishpat, siman 262, paragraphs 11–13, where it is explained that in some cases the manner in which the money is found constitutes an identifying sign, and in other cases it does not. See also Shach, siman 260, se’if katan 26, who writes that with any found object whose law is that it must be left “until Eliyahu comes,” one may make use of it, and when the loser comes and claims his lost item, one should return its value.