There was never a real 3 point hitch made for the 169, only a rear lift used to lift a tiller or sleeve hitch. This place makes an after market category O 3 point hitch that is supposed to fit a 169 but it is a little pricey.
http://www.xtrememotorworks.com/Part.../CC-03-013.htm. I'm not sure if this hitch would work with a cat 1 attachment.