I have a 200 year old family katana. As well as some blades only (no hilts) for 2 katana and a wakizashi. Actually at my parents house, so not mine per se.
EDIT: my ancestors were not samurai, rather physicians for the local daimyo for almost 1,000 years, so were allowed to wear a single blade, katana only, not the daisho or two blades as were carried by samurai class. In fact the family name (mother's side) is Shimizu - which means "purest water", probably related to the curative means of the first of that name.