Is it permissible to cash a check that is found in the street, if the check is made out to "cash" and after attempting to locate an owner, none is found.
Would it be considered the same as finding a $20 bill in the street?
Additional details for the question
if a significant amount of time passes (say 1 month) would it be more permissible to cash a found check. This is considering that the writer of the check and the original intended receiver of the check would have had ample time to cancel the check, if they did not, what could that mean in our case?
(Additionally, is it legal to cash a found check? And would that affect the halacha of this situation?)