Old Leafsprung Land Rovers

Early AVMs have a long body and thinish end cap with AVM cast in the middle, its all metal, kind of simular in shape to a Warn or a Selectro. 

Late AVMs have a shorter body with a much deeper head on end so the overall length is about the same, the turny bit in the end is made of a flimsy plastic which is pritty **** and prone to leaking, in the centre is(was) a little stick on badge which says eather AVM or Superwinch - they are all made by AVM (in Brazil I think).  I know you can get the little service kit with hex bolts, gasgets and the circlip for them from superwinch (and probubly an AVM dealer, if they are still importing them) but if its leaking round the selecter knob they might not be fixable, I swapped mine for some MAPs for that resion.