I am looking at what the value of a 1976 Attex SC would currently be looking to maybe sell or trade one. Everything works except one head stripped and needs to either have either time serts or helicoil installed I am told time serts get better grip and out last helicoils. The Engine is the original 500cc it was running had new pistons and rings when it was bought but past owner stripped head bolts and head pooped off rather quick trans is the T20 works fine no cracks in body one circle nickle size hole in back of tub the fool put in for water drain which a plug will solve has a has a bilge water pump that works fine needs one tire replaced holds air but sidewall damage. So just wondering what the value of this Attex may be I know this is a more rare and sought after model and these things only increase in their value.