I just paid $175 for mine after you deduct all the boot that came with it. Do you have one for sale?
I saw one at a local gunshop (north of Philadelphia) with a blued frame, stainless upper, and fixed night sights for $725 on 10/9/09.
A Smith and Wesson model 66 stainless steel 4" barrell with no dash after the serial number is one of the earliest year guns. It should have all stainless metal with stainless sights front and rear. Black sights or orange inleted front sight is newer model. A no dash with orginal stocks in very good condition can go between 450 to 850 dollars depending on condition of workings and finish. Stock condition has little effect on value.
100-400 or so
Depends on model, barrel/sights, and condition. Anywhere from $100 for a well used Mk1 to $400 for a NIB stainless heavy barreled Mk II with target sights.
100-300 USD
100-600 depending on specifics
50-400 usd
500-600 USD
200-400 USD
The value of these pistols have gone up lately. The "Colt MKIV Series 80 Government .380" Came in stainless and black. The stainless models are more valuable and can bring over $1,000. I have seen a NIB listed for $1,500. Depending on condition the black runs $500 to $800.
Value depends on condition. Please check the blue book value for the gun without accessories
Impossible to answer without a detailed description of all markings, features, barrel length, sights, grips, box, papers, accessories, condition, type of action, etc..