If your Mauser has an Eagle and Swastika it's more likely a 1934. Is the grip straight or is it humped on the back? If humped, it's a 1934.

If it is indeed all original and matching the price would be in the $500 range. If the holster is original, correct and in good condition add $100. These are just guesstimates without seeing it first hand. Do you have any photos?

RS