[Boatanchors] Wanted: 1 MHz crystal for National XCU-27 Calibrator

[D C _Mac_ Macdonald]

Any suggestions for a source of subject crystal at a 
reasonable price would be greatly appreciated! 
  
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* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* Oklahoma City, OK * 
* USAF, Ret'd 61-81 * 
** FAA, Ret'd 94-10 * 
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