U-191-225

(Telephone transposition styles)
U-191
Manufacturer or Marking
No Name (USA)
U-191
Size: 63mm X 85mm (2 ½ x 3 ⅜)
Example in Photo: No Name (USA)
Photo Credit: Shaun Kotlarsky
To directly link to this image copy and paste below URL:
U-191A
Manufacturer or Marking
No Name (USA)
No Name (Thomas) (USA)
U-191A
Size: 66mm X 104mm ( 2 x 4 ⅛)
Example in Photo: No Name (Thomas) (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-192
Manufacturer or Marking
No Name (USA)
U-192
Size: 63mm X 85mm (2 ½ x 3 ⅜)
Example in Photo: No Name (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-192A
Manufacturer or Marking
No Name (Fred Locke) (USA)
Fred Locke (USA)
No Name (USA)
U-192A
Size: 76mm X 88mm (3 x 3 ½)
Example in Photo: Fred Locke (USA)
Photo Credit: Shaun Kotlarsky
To directly link to this image copy and paste below URL:
U-193
Manufacturer or Marking
No Name (USA)
U-193
Size: 84mm X 92mm (3 x 3 ⅝)
Example in Photo: No Name
Photo Credit: National Insulator association
To directly link to this image copy and paste below URL:
U-194
Manufacturer or Marking
No Name (USA)
Lapp (USA)
U-194
Size: 85mm X 82mm (3 x 3 ¼)
Example in Photo:No Name (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-195
Manufacturer or Marking
No Name (USA)
U-195
Size: 63mm X 82mm (2 ½ x 3 ¼)
Example in Photo: No Name (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-196
Manufacturer or Marking
No Name (Fred Locke) (USA)
Fred Locke (USA)
U-196
Size: 85mm X 111mm (3 X 4 ⅜)
Example in Photo: Fred Locke
Photo Credit: Mike Spadafora
To directly link to this image copy and paste below URL:
U-197
Manufacturer or Marking
MACOMB (Dry Process, 2 part Glazeweld) (USA)

NOTE: U-197 is threaded in both parts before glazewelding so the threads usually do not line up.
U-197
Size: 88mm X 66mm X 114mm (3½ x 2 x 4 ½)
Example in Photo: MACOMB (Dry Process, 2 part Glazeweld) (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-197A
Manufacturer or Marking
MACOMB (Dry Process, 2 part Glazeweld) (USA)

NOTE: U-197A is threaded only in the bottom part to correct the alignment problem.
U-197A
Size: 88mm X 66mm X 111mm (3½ x 2 x 4 )
Example in Photo: MACOMB (Dry Process, 2 part Glazeweld) (USA)
Photo Credit: Elton Gish
To directly link to this image copy and paste below URL:
U-197B
Manufacturer or Marking
MACOMB (Dry Process, 2 part Glazeweld) (USA)

NOTE: U-197B is threaded in both parts. This may have been the first redesign, which would have been an interim quick fix by eliminating the glazeweld step. Then likely later both molds were redesigned to return to the original intent of having a one-part tramp.
U-197B
Size: 88mm X 66mm X 114mm (3½ x 2 x 4 ½)
Example in Photo: MACOMB (Dry Process, 2 part Glazeweld) (USA)
Photo Credit: Elton Gish
To directly link to this image copy and paste below URL:
U-198
Manufacturer or Marking
No Name (Pittsburg) (USA)
U-198
Size: 76mm X 111mm (3 x 4 ⅜)
Example in Photo: No Name (Pittsburg)
Photo Credit: National Insulator association
To directly link to this image copy and paste below URL:
U-199
Manufacturer or Marking
No Name (Thomas, Dry Process) (USA)
THOMAS (USA)
Size: 85mm X 101mm (3 x 4)
Variations: Click on the thumbnail above to see style variations
Variations: Tap on the thumbnail above to see style variations
To directly link to this image copy and paste below URL:
U-199A
Manufacturer or Marking
No Name (USA)
THOMAS (USA)
U-199A
Size: 84mm X 107mm (3 x 4 ¼)
Example in Photo: No Name
Photo Credit: National Insulator association
To directly link to this image copy and paste below URL:
U-200
Manufacturer or Marking
No Name (USA)
U-200
Size: 82mm X 101mm (3 ¼ x 4)
Example in Photo: No Name (USA)
Photo Credit: Bill Ostrander
To directly link to this image copy and paste below URL:
U-200A
Manufacturer or Marking
No Name (USA)
U-200A
Size: 76mm X 104mm (3 x 4 )
Example in Photo: No Name (USA)
Photo Credit: Matt Grayson
To directly link to this image copy and paste below URL:
U-201
Manufacturer or Marking
No Name (USA)
No Name (Thomas) (USA)
G.P.Co. (USA)

NOTE: In 2008 and older reference books, there was a U-201, U-201A and U-201B. They are now the same U number as the difference was a manufacturing variation.
Size: 85mm X 104mm (3 x 4 )
Variations: Click on the thumbnail above to see style variations
Variations: Tap on the thumbnail above to see style variations
To directly link to this image copy and paste below URL:
U-202
Manufacturer or Marking
No Name (Pittsburg) (USA)
No Name (USA)
U-202
Size: 82mm X 101mm (3 ¼ x 4)
Example in Photo: No Name (Pittsburg)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-202A
Manufacturer or Marking
No Name (Pittsburg, MLOD) (USA)
365 (Pittsburg, MLOD)
U-202A
Size: 76mm X 104mm (3 x 4 ⅛)
Example in Photo: No Name (Pittsburg, MLOD) (USA)
Photo Credit: Elton Gish
To directly link to this image copy and paste below URL:
U-205
Manufacturer or Marking
No Name (USA)
Cook (USA)
U-205
Size: 82mm X 111mm (3 ¼ x 4 ⅜)
Example in Photo: No Name (USA)
Photo Credit: Bill Ostrander
To directly link to this image copy and paste below URL:
U-206
Manufacturer or Marking
Westinghouse (USA)
U-206
Size: 95mm X 101mm (3 ¾ x 4)
Example in Photo: Westinghouse (USA)
Photo Credit: Fred Collier
To directly link to this image copy and paste below URL:
U-206A
Manufacturer or Marking
O-B (USA)
U-206A
Size: 95mm X 104mm (3 ¾ x 4 ⅛)
Example in Photo: O-B (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-206B
Manufacturer or Marking
No Name (USA)

NOTE: In pre 2008 reference books, there was a U-206C. It was a trimming variation of the U-206B so U-206C has been removed.
U-206B
Size: 95mm X 98mm (3 ¾ x 3 )
Example in Photo: No Name (USA)
Photo Credit: Fred Collier
To directly link to this image copy and paste below URL:
U-207
Manufacturer or Marking
No Name (USA)
No Name (G.P.Co.)
O-B (USA)
No Name (Lima or New Lexington) (USA)

NOTE: In 2008 and older reference books, there is a U-207A, U-207B, U-207C and U-207D. All are now consolidated to U-207 as they are just trimming variations.
U-207
Size: 88mm X 117mm (3 ½ x 4 ⅝)
Example in Photo: No Name (USA)
Photo Credit: Shaun Kotlarsky
To directly link to this image copy and paste below URL:
U-209
Manufacturer or Marking
No Name (USA)
No Name (Cook) (USA)
COOK (USA)
THOMAS (USA)

NOTE: In 2008 and older reference books, There is a U-208, U-208A and U-210 listed. They are all now consolidated in to U-209 as they are just trimming variations.
Size: 95mm X 101mm (3 ¾ 4)
Variations: Click on the thumbnail above to see style variations
Variations: Tap on the thumbnail above to see style variations
To directly link to this image copy and paste below URL:
U-211
Manufacturer or Marking
No Name (USA)
G.P.Co. (USA)
U-211
Size: 107mm X 111mm (4 ¼ x 4 ⅜)
Example in Photo: G.P.Co. (USA)
Photo Credit: Elton Gish
To directly link to this image copy and paste below URL:
U-212
Manufacturer or Marking
No Name (USA)
Locke (USA)
Westinghouse (USA)
U-212
Size: 133mm X 120mm (5 ½ x 4 ¾)
Example in Photo: No Name (USA)
Photo Credit: Elton Gish
To directly link to this image copy and paste below URL:
U-213
Manufacturer or Marking
No Name (USA)
Cook (USA)
No Name (LAPP) (USA)
U-213
Size: 114mm X 101mm (4 ½ x 4)
Example in Photo: No Name (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-213A
Manufacturer or Marking
No Name (USA)
U-213A
Size: 114mm X 101mm (4 ½ x 4)
Example in Photo: No Name (USA)
Photo Credit: Matt Grayson
To directly link to this image copy and paste below URL:
U-214
Manufacturer or Marking
P.P. Inc. (USA)
U-214
Size: 117mm X 101mm (4 x 4)
Example in Photo: P.P. Inc. (USA)
Photo Credit: Zac Mirecki
To directly link to this image copy and paste below URL:
U-215
Manufacturer or Marking
No Name (Lapp) (USA)
Lapp (USA)
THOMAS (USA)
U-215
Size: 101mm X 101mm (4 x 4)
Example in Photo: Lapp (USA)
Photo Credit: Matt Grayson
To directly link to this image copy and paste below URL:
U-217
Manufacturer or Marking
No Name (USA)
Illinois (USA)
Illinois Map (USA)
P.P. Inc. (USA)

NOTE: in 2008 and older reference books, there was a U-217A and U-217B. They have been deleted and are now all part of U-217
U-217
Size: 120mm X 107mm (4 ¾ x 4 ¼)
Example in Photo: No Name (USA)
Photo Credit: Bill Ostrander
To directly link to this image copy and paste below URL:
U-219
Manufacturer or Marking
No Name (Thomas) (USA)

NOTE: In 2008 and older reference books, there was a U-219A. All listings are now part of U-219
U-219
Size: 101mm X 127mm (4 x 5)
Example in Photo: No Name (Thomas) (USA)
Photo Credit: Bill Rohde
To directly link to this image copy and paste below URL:
U-220A/B
Manufacturer or Marking
No Name (Fred Locke) (USA)
Fred Locke (USA)
U-220A/B
Size: 69mm X 85mm X 98mm (2 ¾ x 3 x 3 ⅞)
Example in Photo: Fred Locke
Photo Credit: Mike Spadafora
To directly link to this image copy and paste below URL:
U-222A/B
Manufacturer or Marking
P.R.R. (USA)
U-222A/B
Size: 88mm X 82mm X 114mm (3 ½ x 3 ¼ x 4 ½)
Example in Photo: P.R.R. (USA)
Photo Credit: Jeff Katchko
To directly link to this image copy and paste below URL:
U-223A/B
Manufacturer or Marking
No Name (USA)
P.R.R. (USA)
U-223A/B
Size: 82mm X 88mm X 114mm (3 ¼ x 3 ½ x 4 ½)
Example in Photo: No Name (USA)
Photo Credit: Mid Norris
To directly link to this image copy and paste below URL:
U-224A/B
Manufacturer or Marking
No Name (Pittsburg) (USA)
U-224A/B
Size: 79mm X 88mm X 117mm (3 x 3 ½ x 4 )
Example in Photo: No Name (Pittsburg) (USA)
Photo Credit: Unknown
To directly link to this image copy and paste below URL:
U-225A/B
Manufacturer or Marking
No Name (Lima) (USA)
LOCKE (USA)
U-225A/B
Size: 82mm X 95mm X 120mm (3 ¼ x 3 ¾ x 4 ¾)
Example in Photo: No Name (Lima) (USA)
Photo Credit: Dave Kingston
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