Up for sale at Czerny's International Auction House on Nov. 16, from the "Tom Berlinger Collection"(?).  Authentic or Secretarial? Looks decidedly secretarial to me, but interested in expert opinions.

http://www.artfact.com/auction-lot/-1-c-C6D1634270?utm_source=afale...

Auction Description: Letter with authentic signature of John F. Kennedy, dated "January 18. 1956", Senator at the time, then 35th President of the United States of America. Letter headed "Unided States Senate". Complete with "United States Senate Committee on Labor and Public Welfare President John F. Kennedy" warranty certificate.

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