What is ealy 40 kelvinator fridge worth?

It can be difficult to determine the value of a vintage refrigerator like a 1940s Kelvinator without more specific information about the model and condition. However, in general, vintage refrigerators can fetch a premium among collectors and those looking for period-specific appliances for a restored home. The value will depend on the condition, rarity and demand for the specific model. I suggest searching online for similar models and seeing what prices they have sold for. It's also recommended to consult with an appraiser or an expert in vintage appliances for a more accurate estimate of its value.