Suburban value

[Christopher]

I have to sell my 1970 Suburban although I don't want to!
I need to know what a reasonable price to ask would be.
It is in excellent condition, 110,000 original miles on it driving from Oregon to Mexico by my Great Grandfather who bought it new, they used it to drive from their summer house to Mexico and Arizona for the winter, needless to say it has always been in a garage and has always had rediculous maintenence, like antifreeze flush, oil change, chassis lube, filters etc. all every 3,000 miles! also has had a bypass oil filter system on it since new, I still do the same maintenence Grandpa did and the oil is still clear at 3,000 miles. The reason I change is it sits in the garage with a run once a month or so.
Has a 292 inline 6 engine, I checked the compression on it about 500 miles ago and it was even all the way across at 145.
4 speed manual transmission, 3/4 ton and this will tow a lot! The interior is clean but the seats are not perfect, headliner is great as well as the original floor mat and door panels, dash pad has a small crack otherwise everything is in great condition.
No real rust on it and it has the original paint but it should be painted as it has a dent and scratch in the drivers door and one of the rear doors, paint is still shiny though.
This is a no option model, no air, AM radio and that is about it. It has been sitting here in my garage and it will start to fall apart if I keep it and I don't want that. I want someone to have it that will take care of it, fix it up and apreciate it.
So if you were able to get through all of that rambling, what would this be worth and what would be a reasonable starting price?
Thanks a bunch,
Christopher