100 to multiple thousands of USD depending on how old it is, who did the engraving, whether it was done at the facotory or aftermarket, whether any precious metals or stones were used/inlaid, finish, grips, barrel length, age, accessories, papers, box, etc..
value of smith & Wesson model 5906 pistol
$4,250
No such model number.
o-500 USD
50-550 usd
100-500 USD
100-1200 USD
225
0-300 USD
50-650 uSD
50-500 usd
50-600 usd