seagull 4a is the second model from 1968. some chinese amateurs consider the 4a and the later 4a-1 variants professional, partly because the camera was unaffordable for most chinese citizens in the 1960s and 1970s. the 4a sold for 230 rmb and the 4a-1 for 290 rmb, whereas a worker earned only 20 rmb per month. the camera was unavailable to ordinary people, and only those working for government and press could afford one.