Size: 55mm X 79mm (2 3/16 x 3 ⅛) Example in Photo: FEDCO (Dry Process) (USA) Photo Credit: Elton GIsh
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U-48 Manufacturer or Marking No Name (Lima) (USA) 5 (USA)
Size: 60mm X 92mm (2 ⅜ x 3 ⅝) Example in Photo: No Name (Lima) Photo Credit: Shaun Kotlarsky
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U-49 Manufacturer or Marking No Name (Dry Process) (USA)
Size: 53mm X 69mm (2 ⅛ x 2 ¾) Example in Photo: No Name (Dry Process) (USA) Photo Credit: Matt Grayson
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U-50 Manufacturer or Marking No Name (USA) G (USA)
Size: 58mm X 76mm (2 5/16 x 3) Example in Photo: G Photo Credit: Shaun Kotlarsky
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U-52 Manufacturer or Marking No Name (USA) No Name (Thomas, Dry Process, Carved Top) (USA) 5 (in top of Pinhole) (USA) Westinghouse (USA)
NOTE: Carved top Thomas only. Non Carved top will be U-52A
Size: 58mm X 85mm (2 ¼ X 3 ⅜) Example in Photo: No Name (Thomas, Dry Process, Carved Top) (USA) Photo Credit: Elton Gish
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U-52A Manufacturer or Marking No Name (Thomas, Dry Process, Non-Carved Top) (USA) No Name (NON Thomas, Dry Process) (USA) G (USA)
NOTE: Non-Carved top Thomas only. Carved top will be U-52 for standard one or U-52B for tall one
Size: 60mm X 92mm (2 ⅜ X 3 3 ⅝) Example in Photo: No Name (USA) Photo Credit: Shaun Kotlarsky
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U-52B Manufacturer or Marking No Name (Thomas, Dry Process) (USA)
Size: 85mm X 98mm (2 ⅜ X 3 3 ⅞) Example in Photo: No Name (USA) Photo Credit: Elton Gish
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U-53 Manufacturer or Marking No Name (USA) No Name (Dry Process) (USA) G.P.Co (USA)
Size: 85mm X 88mm (2 ⅜ x 3 ½) Example in Photo: No Name (USA) Photo Credit: Elton Gish
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U-54 Manufacturer or Marking No Name (USA) FEDCO (Dry Process) (USA)
Size: 53mm X 69mm (2 ⅛ x 2 ¾) Example in Photo: FEDCO (Dry Process) (USA) Photo Credit: Elton Gish
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U-55 Manufacturer or Marking No Name (USA) No Name (Fred Locke) (USA) Fred Locke (USA) G (USA) Illinois Map (USA) P.P. Inc. (USA)
NOTE: In 2008 and older reference books, there was a listing for U-55A. It is now part of U-55 as it is just a trimming variation of U-55
Example in Photo: Fred Locke (USA) Photo Credit: Shaun Kotlarsky
NOTE: In 2008 and older reference books, this was called a U-55A. It is just a trimming variation of U-55 Example in Photo: No Name (Fred Locke) (USA) Photo Credit: Elton Gish
Size: 60mm X 82mm (2 ⅜ x 3 ¼)
Variations:Click on the thumbnail above to see style variations
Variations:Tap on the thumbnail above to see style variations
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U-56 Manufacturer or Marking No Name (PP) (USA) G.P.Co (USA) P.P. Inc. (USA)
Size: 57mm X 82mm (2 ¼ x 3 ¼) Example in Photo: P.P. Inc. (USA) Photo Credit: Shaun Kotlarsky
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U-57 Manufacturer or Marking No Name (USA) MACOMB (USA)
Size: 57mm X 95mm (2 ¼ x 3 ¾) Example in Photo: MACOMB (USA) Photo Credit: Shaun Kotlarsky
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U-58 Manufacturer or Marking No Name (USA) Knox (USA)
Size: 60mm X 88mm (2 ⅜ X 3 ½) Example in Photo: No Name (USA) Photo Credit: Elton Gish
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U-60 Manufacturer or Marking No Name (Lima) (USA)
Size: 60mm X 84mm (2 ⅜ X 3 5/16) Example in Photo: No Name (Lima) (USA) Photo Credit: Elton Gish
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U-61 Manufacturer or Marking No Name (Parker catalog 112) (USA) No Name (PP, Dry Process) (USA) No Name (Thomas) (USA) G.P.Co. (USA)
Size: 57mm X 82mm (2 ¼ X 3 ¼) Example in Photo: No Name (Thomas) (USA) Photo Credit: Shaun Kotlarsky
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U-62 Manufacturer or Marking No Name (New Lexington) (USA)
Size: 63mm X 95mm (2 ½ X 3 ¾) Example in Photo: No Name (New Lexington) (USA) Photo Credit: Elton Gish
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U-64 Manufacturer or Marking No Name (USA) O-B (USA)
Size: 57mm X 76mm (2 ¼ x 3) Example in Photo: O-B (USA) Photo Credit: Shaun Kotlarsky
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U-65 Manufacturer or Marking No Name (USA) No Name (Lima) (USA) Illinois (USA) Locke (USA) O-B (USA)
Size: 60 X 76mm (2 ⅜ x 3) Example in Photo: No Name (USA) Photo Credit: Elton Gish
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U-65A Manufacturer or Marking No Name (Lima) (USA) No Name (New Lexington) (USA)
Size: 57mm X 73mm (2.25 x 2.875) Example in Photo: No Name (New Lexington) (USA) Photo Credit: Elton Gish
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U-66 Manufacturer or Marking No Name (USA)
Size: 95mm X 92mm (3 ¾ x 3 ⅝) Example in Photo: No Name (USA) Photo Credit: Elton Gish
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U-67 Manufacturer or Marking No Name (USA) Fred Locke (USA)
Size: 74mm X 73mm (2 15/16 x 2 ⅞) Example in Photo: No Name (USA) Photo Credit: Elton Gish
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U-68 Manufacturer or Marking No Name (Lima) (USA) No Name (Pittsburg, 11 MLOD)
Size: 63mm X 76mm (2 ½ x 3) Example in Photo: No Name (Pittsburg, 11 MLOD) Photo Credit: Elton Gish
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U-70 Manufacturer or Marking No Name (USA)
Size: 69mm X 101mm (2 ¾ x 4) Example in Photo: No Name (USA) Photo Credit: Bill Ostrander
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U-73 Manufacturer or Marking No Name (Pittsburg) (USA) No Name (Thomas) (USA)
Size: 57mm X 85mm (2 ¼ x 3 ⅜) Example in Photo: No Name (Pittsburg) (USA) Photo Credit: Shaun Kotlarsky
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U-74 Manufacturer or Marking No Name (Pittsburg) (USA)
Size: 60mm X 85mm (2 ⅜ x 3 ⅜) Example in Photo: No Name (Pittsburg) (USA) Photo Credit: Shaun Kotlarsky
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U-75 Manufacturer or Marking No Name (Pittsburg) (USA)
Size: 60mm X 76mm (2 ⅜ x 3) Example in Photo: No Name (Pittsburg) (USA) Photo Credit: Elton Gish
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U-76 Manufacturer or Marking No Name (Thomas) (USA)
Size: 60mm X 85mm (2 ⅜ x 3 ⅜) Example in Photo: No Name (Thomas) (USA) Photo Credit: Elton Gish
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