Late model Hickok 539C, Calibrated, Clean, and Has Little Use 
See pictures 6, 7, and 8 for calibration specs and some additional work information for this 539C. 
                                                            
You can have this 539C calibrated at no charge withing three years of the date of purchase, but will have to pay for the shipping. There may be additional charges if parts are needed such as new rectifiers e.g.  You will receive a calibration card with the date of purchase. There was some light water damage to the "Leatherette" on the rear of the case, but was not bad enough to penetrate the inside, and the case is solid and in good condition otherwise, but is discounted $100.00 for this reaason.
 
Please see the calibration information in the pictures.
 
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