Roy Ehrhardt (Ehrhardt, Roy)

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• 
  American pocket watch 1977 price indicator: Identification and price guide
  

  by Roy Ehrhardt

  ISBN 0913902217 (0-913902-21-7)
  Softcover, Ehrhardt, 1976

  
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  • American pocket watch 1977 price indicator: Identification and price guide: ISBN 0913902217 (0-913902-21-7)
    Softcover, Ehrhardt, 1976
• 
  Bradley Character Watches Identification & Price Guide
  

  by Ehrhardts, Roy Ehrhardt

  ISBN 0913902896 (0-913902-89-6)
  Softcover, Heart of America Pr, 1994

  
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  • Bradley Character Watches Identification & Price Guide: ISBN 0913902896 (0-913902-89-6)
    Softcover, Heart of America Pr, 1994
• 
  Cartier: Wrist & Pocket Watches Clocks: Identification & Price Guide 1992
  

  by Roy Ehrhardt , Joe Demesy

  ISBN 0913902624 (0-913902-62-4)
  Softcover, Heart of America Pr, 1992

  
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  • Cartier: Wrist & Pocket Watches Clocks: Identification & Price Guide 1992: ISBN 0913902624 (0-913902-62-4)
    Softcover, Heart of America Pr, 1992
• 
  Foreign & American Pocket Watch Identification & Price Guide
  

  by Roy Ehrhardt

  ISBN 0913902160 (0-913902-16-0)
  Softcover, Heart of America Press, 1976

  
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  • Foreign & American Pocket Watch Identification & Price Guide: ISBN 0913902160 (0-913902-16-0)
    Softcover, Heart of America Press, 1976
• 
  Foreign Clock Identification & Price Guide
  

  by Roy Ehrhardt

  ISBN 0913902861 (0-913902-86-1)
  Softcover, Heart of America Pr, 1995

  
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  • Foreign Clock Identification & Price Guide: ISBN 0913902861 (0-913902-86-1)
    Softcover, Heart of America Pr, 1995
• 
  Foreign Clocks Identification and Price Guide: Book 4
  

  by Roy Ehrhardt

  ISBN 0913902705 (0-913902-70-5)
  Softcover, Heart of America Pr, 1993

  
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  • Foreign Clocks Identification and Price Guide: Book 4: ISBN 0913902705 (0-913902-70-5)
    Softcover, Heart of America Pr, 1993
• 
  Patek Philippe Parts & Materials Catalog Book
  

  by Roy Ehrhardt

  ISBN 0913902993 (0-913902-99-3)
  Softcover, Heart of America Pr, 1997

  
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  • Patek Philippe Parts & Materials Catalog Book: ISBN 0913902993 (0-913902-99-3)
    Softcover, Heart of America Pr, 1997
• 
  Patek Philippe: Wrist Watches, Pocket Watches, Clocks : Identification and Price Guide : Retail & Vintage Prices : Book 1
  

  by Roy Ehrhardt , Joe Demesy

  ISBN 0913902608 (0-913902-60-8)
  Softcover, Heart of America Pr, 1991

  
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  • Patek Philippe: Wrist Watches, Pocket Watches, Clocks : Identification and Price Guide : Retail & Vintage Prices : Book 1: ISBN 0913902608 (0-913902-60-8)
    Softcover, Heart of America Pr, 1991
• 
  Trade marks: Watch cases, pocket watches, precious stones, diamonds
  

  by Roy Ehrhardt

  ISBN 0913902063 (0-913902-06-3)
  Softcover, Ehrhardt : [available from Heart to America Press], 1976

  
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  • Trade marks: Watch cases, pocket watches, precious stones, diamonds: ISBN 0913902063 (0-913902-06-3)
    Softcover, Ehrhardt : [available from Heart to America Press], 1976
• 
  Vintage American and European Wrist Watch Price Guide
  

  by Roy Ehrhardt , Sherry L. Chrhardt

  ISBN 0913902446 (0-913902-44-6)
  Softcover, Heart of America Pr, 2004

  
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  • Vintage American and European Wrist Watch Price Guide: ISBN 0913902446 (0-913902-44-6)
    Softcover, Heart of America Pr, 2004
• 
  Violin Identification & Price Guide, Book 3
  

  by Roy Ehrhardt

  ISBN 091390225X (0-913902-25-X)
  Softcover, Heart of America Pr, 1978

  
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  › Find signed collectible books: 'Violin Identification & Price Guide, Book 3'
  

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  • Violin Identification & Price Guide, Book 3: ISBN 091390225X (0-913902-25-X)
    Softcover, Heart of America Pr, 1978