Dating a waltham watch. Brief History: American Waltham Watch Company.



Dating a waltham watch

Dating a waltham watch

None have been observed so the location of the unjeweled pivot is unknown. Essentially all the early ones are AWCo grade and have cap jewels in addition to hole jewels. This results in 19 and sometimes 21 jewels.

Most have cap jewels in addition. Normally on the balance but also on other arbors e. Exp "Ex" or "exp. Steel or Gold or Nickel refer to the material from which the balance is made.

This implies a plain balance without screws or a cut rim. Mono "Mono" is short for "monometallic" balance, which was the term used for the 20th century solid balance used with temperature insensitive hairsprings Conel for Waltham.

The balance material has a proprietary name also but I have not found it. Chrono "Chrono" is short for "chronometer" balance, and is an early term used by Waltham for a higher grade expansion balance. Style refers to the type of case for which the movement was designed.

The pendant is at 90 degrees from the 4th wheel. Various dials can put the dial numbers at other positions OF "OF" refers to an "open face" case movement, which has the winding pendant at the 12 o'clock position, and does not have a cover that closes over the face. The pendant is degrees from the 4th wheel and seconds indication. Sky "Skylight"" refers to an open face case with an enlarged bezel that covers a portion of the dial. Usually found on smaller watches with a hunting type movement and no seconds bit on the dial.

Opera "Opera" refers to a specific model of case patented by Ezra C. Marsh "Marsh" refers to a specific model of case patented by Edward A. Marsh that used an inner guard with movement holder and cuvette to provide protection for the movement with a thin hinged back case of gold on the outside to provide an inexpensive but sturdy gold case.

It requires a specially modified movement listed as Marsh in the Grey Book. Almost all rectangular movements have the hunting or 90 degree configuration Comment Contains anything that did not fit in with the standard fields. Sometimes this is commentary by the transcribers.

Sometimes it is material that was distributed across the columns in the original manuscript. For serial numbers above 7,, The comment field contains the page number from the printed serial number list. The "Comment" field uses the following abbreviations: Sometimes just "CH" Pat Reg.

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"Waltham Watch" - The Factory History



Dating a waltham watch

None have been observed so the location of the unjeweled pivot is unknown. Essentially all the early ones are AWCo grade and have cap jewels in addition to hole jewels. This results in 19 and sometimes 21 jewels. Most have cap jewels in addition. Normally on the balance but also on other arbors e. Exp "Ex" or "exp. Steel or Gold or Nickel refer to the material from which the balance is made.

This implies a plain balance without screws or a cut rim. Mono "Mono" is short for "monometallic" balance, which was the term used for the 20th century solid balance used with temperature insensitive hairsprings Conel for Waltham.

The balance material has a proprietary name also but I have not found it. Chrono "Chrono" is short for "chronometer" balance, and is an early term used by Waltham for a higher grade expansion balance. Style refers to the type of case for which the movement was designed. The pendant is at 90 degrees from the 4th wheel. Various dials can put the dial numbers at other positions OF "OF" refers to an "open face" case movement, which has the winding pendant at the 12 o'clock position, and does not have a cover that closes over the face.

The pendant is degrees from the 4th wheel and seconds indication. Sky "Skylight"" refers to an open face case with an enlarged bezel that covers a portion of the dial. Usually found on smaller watches with a hunting type movement and no seconds bit on the dial. Opera "Opera" refers to a specific model of case patented by Ezra C.

Marsh "Marsh" refers to a specific model of case patented by Edward A. Marsh that used an inner guard with movement holder and cuvette to provide protection for the movement with a thin hinged back case of gold on the outside to provide an inexpensive but sturdy gold case. It requires a specially modified movement listed as Marsh in the Grey Book. Almost all rectangular movements have the hunting or 90 degree configuration Comment Contains anything that did not fit in with the standard fields.

Sometimes this is commentary by the transcribers. Sometimes it is material that was distributed across the columns in the original manuscript. For serial numbers above 7,, The comment field contains the page number from the printed serial number list. The "Comment" field uses the following abbreviations: Sometimes just "CH" Pat Reg.

Dating a waltham watch

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5 Comments

  1. The Elgin and Hamilton were dated by serial number, while the Gruen was dated by an inscription on the back.

  2. Sometimes it is material that was distributed across the columns in the original manuscript.

  3. Marsh "Marsh" refers to a specific model of case patented by Edward A. With financial backing from Samuel Curtis, of small-arms manufacturing fame, the watch production began in , and the first small group of watches were finished in late

  4. Essentially all the early ones are AWCo grade and have cap jewels in addition to hole jewels. The company was exploring innovative new ideas in watch manufacturing, such as using jewels, making enamel dials, and producing plates with a high-level of finish which required extensive tooling and resulted in a great financial burden.

  5. Tips for looking up your watch How to Find Info About Your Pocket Watch The Pocket Watch Database has compiled data covering the major American pocket watch manufacturers and created an easy way to find information using the serial number on the watch movement. They also found that even though they were using interchangeable parts, each watch was still unique and had its own set of errors to be corrected. The pendant is degrees from the 4th wheel and seconds indication.

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