With mechanical typewriters from the 1960s, strike differences are to be expected that arise with a soiled or jammed typebar segment and can be remedied through a service; later golfball typewriters do not have this problem. Ink ribbons are not generally standardised but, depending on the model, still available in specialist trade. Before purchase of a concrete model (mentioned was e.g. a Privileg 160T), research on spare-parts supply and, if applicable, cleaning/service of the mechanism by an office-machine mechanic is worthwhile.