Again, “abandon” has a clear legal meaning . . . and the item was not “abandoned” at the bar. Nor can it be abandoned by someone who does not have the authority to abandon it (the person who picked up the phone at whatever telephone number the guy called).
Yeah. Like this:
It becomes abandoned property when alleged owner not only refuses to accept it back, but refuses to even acknowledge that he's even lost anything at all, when the finder tries repeatedly to return it.