Purchased a clock drive mount via gumtree without the mount base, Tripod or GOTO box. It has a 40mm by 150 mm counterweight -- think that may be 5kg. It appears it is a Skyview Pro EQ5.
But this mount was only $40, hence I am not complaining at having to chase up missing bits and knobs.
Plan on purchasing these for it, so it can be used manually at first:--
http://www.sirius-optics.com.au/saxo...SABEgI2qfD_BwE