assuming its a 3 inch 66 -4 or earlier that's about the limit I would pay for one without box, papers etc.

for a -4 or earlier with box, papers etc I think $1200 is a deal.

and like the others have pointed out, when are you going to see another one?

if you haven't noticed, excellent condition 2.5 inch 66's with box and papers (especially -1's) have risen over the last few years they are starting to command $900-1000 and sometimes more.