A watchmaker friend and I currently are collaborating on an article for the NAWCC Bulletin regarding the two Waltham watch designs that originated at the Nashua Watch Co., the KW20 and KW16, also known as the Models 1862 and 1860 [sic]. As part of this effort, we are trying to assemble a table of as many extant examples of these two models as possible. All the publically available sources from on-line sales archives and books already have been consulted. We also have information about numerous examples in various private collections. We are currently reaching out to the rest of the collecting community to further expand our table, which currently includes 136 and 163 KW20 and KW16 examples, respectively, of all grades (i.e., AWCo, AT&Co., and Amn). When the article is published, we will share our table on line, as well as in print, but will keep our data sources confidential unless otherwise instructed.
Thanks very much in advance!
The best way to transmit your information would be through images, but we can accept written data as well. The kinds of information we are recording include the following:
Movement:
SN,
Grade
# Jewels
Gilt or nickel? (KW16s only)
Patent markings (Stratton's and/or Fogg's pinion, and/or Fogg's vibrating stud)
Balance wheel features: (bimetallic or solid gold?) (flared or tapered spars?) (large diameter balance wheel? (KW20s only))
Regulator type (simple straight, Fogg's cam, or Fogg's vibrating stud?)
Exposed stopwork?
Gold train? (AWCo grade only)
Curb pin adjusting screw?
Any unusual features?
Dial/hands:
Single-line signature?
3-line signature?
Other signature style?
Glass enamel?
Spade hands?
Other style hands?
Case:
Correct? (If not, stop)
HC, OF, demihunter, or reversible?
Case metal?
Maker's or retailer's markings?
Dates on inscriptions?
Any unusual features (e.g., dual pushpiece, magic bow, glass back, enamel, etc.) or noteworthy inscriptions
The table also has a "Comments" column for any other relevant information.
Thanks very much in advance!
The best way to transmit your information would be through images, but we can accept written data as well. The kinds of information we are recording include the following:
Movement:
SN,
Grade
# Jewels
Gilt or nickel? (KW16s only)
Patent markings (Stratton's and/or Fogg's pinion, and/or Fogg's vibrating stud)
Balance wheel features: (bimetallic or solid gold?) (flared or tapered spars?) (large diameter balance wheel? (KW20s only))
Regulator type (simple straight, Fogg's cam, or Fogg's vibrating stud?)
Exposed stopwork?
Gold train? (AWCo grade only)
Curb pin adjusting screw?
Any unusual features?
Dial/hands:
Single-line signature?
3-line signature?
Other signature style?
Glass enamel?
Spade hands?
Other style hands?
Case:
Correct? (If not, stop)
HC, OF, demihunter, or reversible?
Case metal?
Maker's or retailer's markings?
Dates on inscriptions?
Any unusual features (e.g., dual pushpiece, magic bow, glass back, enamel, etc.) or noteworthy inscriptions
The table also has a "Comments" column for any other relevant information.
Last edited:
