It is virtually impossible to give a value on any firearm with just the model and serial number. You do not mention the finish, overall condition, barrel length, tgrip material, any accessories, engraving, papers, box or historical association with a person or event. It could be in the 10-1000 USD range or more.
colt cobra 38 special serial number 139350
value depends on overall condition..................
1969/1970
made about 1952
50-500 usd
Please try proofhouse.com for answer.
50-450 USD or so
No way to value off the sn. 100-1000 USD range.
$400-$500. sales@countrygunsmith.net
Right, 1959
value depends on overall condition...................
100-600 USD