Abstract
Preliminary results of a search for QSO candidates in a 25 square degree field around NGC 450 are described on the basis of U/B dual photographic plates. A possible case of gravitational lens or of twin quasars was found; spectroscopy as well as deep CCD "photography" of these two objects are briefly presented. This contribution is an update of two communications at the 24th Liege meeting (Swings et al. 1983, Surdej et al. 1983).
