Determining a real value of any old car is difficult----ultimately the market determines the value, how much someone is willing to pay for the car.
I have just gone through this with two licensed appraisers at the insistence of my insurance company. One appraiser was very informative and verbally walked me through the appraisal process.
His first step was to determine the value of the basic body; IE, 32 vickies are rarer thus more valuable than basic sedans, roadster are worth even more, etc. Then he looked at the condition of the body panels, how much filler was used(using his neat sonic thickness equipment). Then he looked at the condition of the frame, suspension, etc. Then came the evaluation of the paint, upholstery---then in my case(resto street rod), he valued the value of the custom upholstery. Finally, he looked at the fit of the body panels(1940 sedan)----I was astonished at the difference in value between poor fit, moderate fit and precise fit of the hood, fenders, trunk, doors, etc.
I was very surprised at the appraised value, but I have had unsolicited offers in the last three months that were close to the appraisal----the car is not for sale but it gives a warm, fuzzy feeling when the offers came.
I guess what I am trying to say is the "street" value on two identical cars can vary widely depending on the factors described above.
Closer to your exact question, a friend bought a 32 five window coupe about four years ago, in driveable condition, with some rust, upholstery basically gone, paint very old-----for $15,000 cash. He was pleased with his purchase. From the pictures, your car looks in better condition. What I don't know is the market difference between a coupe and sedan.