relic

muistoesine, muisto

jäännös, jäänne, reliikki That which remains; that which is left after loss or decay; a remaining portion.
Something old and outdated, possibly kept for sentimental reasons.
1991, U.S. News & World Report (volume 116, issues 9-16, page 72)

Published in 1982, the now out-of-print computer guide is a real relic, full of dozens of black-and-white pictures of large, bulky computers that you would sooner find in the Smithsonian than on anybody's desk today.