If by the answer it appears, or if upon trial it is found, that the garnishee, at the time of the service upon him or the officer thereof of the copy of the writ of attachment and notice, had any property of the defendant liable to attachment as provided in paragraph (3) of section 256 of this title, and as to which such garnishee or officer thereof is required to give a certificate as provided in section 265 of this title beyond the amount admitted in the certificate, or in any amount if the certificate was refused, judgment may be given against such garnishee for the value thereof in money.