Model 27. Made in the 73/74 time frame. Call S&W and they can tell you when it shipped from the factory.
1970
$200-$450, depending on which model, barrel and condition. Excellent revolvers.
Impossible to answer without the serial number. The serial number is on the butt.
The S&W Model 57 chambered in .41 Magnum with a 6" barrel will range from about $400 to $2000 depending on condition and age.
@ 23 yrs old. 50-500 USD
Depends on model, type metal, barrel, condition etc, Typically $150-$275. These are extremely well made, underappreciated revolvers.
A Model 25 will be chambered either for 45 ACP or 45 Colt as it comes from the factory.
The 41 Magnum is the Model 57 or 58. The Model 29 is a 44 Magnum.
@ 1985
Value of a smith and western model 581 357 magnum crome with 6 inch bull barrel
The winchester model 670,and magnum models were made from 1967-1973.
Depends on model, type metal, barrel, condition etc, Typically $150-$275. These are extremely well made, underappreciated revolvers.