gigem, welcome to the forum.
The first revolver looks like a .38 S&W Double Action, Third Model, from the mid-1890s. Worth maybe $150-200 in that condition. They aren't rare.
The second one is a Military and Police snubnose from the mid-1950s. I don't collect these, but they have a following. Maybe $350-450 depending on condition. Note what are called "plainclothes" stocks -- they are radiused at the bottom in order not to announce their presence through a sport coat when worn on a belt.
The last looks like a .38 Chief's Special from about 1967-68. That is a .38 special, right? Not a .32? Maybe $300-400.
You may get some other ideas on price. I'm in California, where things are more expensive, and I'm also not really a follower of smaller .38s. I could be wrong on either side of the right price.