Boston Watch Company
Figure 1. Aaron Dennison and Edward Howard
Figure 2. The First Watch Factory In America
The Howard, Davis & Dennison Watch
Figure 3. Howard, Davis & Dennison watches, Boston: No. 3 and No. 2
The Warren Watch
The Samuel Curtis Watch
Figure 4. Warren No. 44 and Samuel Curtis No. 899
Figure 5. Early Drawing Of The Boston Watch Co. Factory
The Dennison, Howard & Davis Watch
Figure 6. DH&D Nos. 1016 and 2673
Figure 7. Different Train Arrangements Between Samuel Curtis and Dennison Howard & Davis
Figure 8. Different Pillar Positions Between Samuel Curtis and Dennison Howard & Davis
Figure 9. Old and New Fastening Arrangements of DH&D Potances
Figure 10. Progression Of Pillar Plates On The Curtis and DH&D
Table 1. Introduction of DH&D Design Changes
The Bankruptcy
The Howard & Rice Watch
Figure 11. Howard & Rice S/N 6011
Figure 12. Howard & Rice Regulator on S/N 6011
Figure 13. Howard & Rice S/N 6112
Tracy Baker & Co./Appleton Tracy & Co.
Figure 14. Sketch of the Waltham Factory as it appeared August 28, 1858
Figure 15. DH&D S/Ns 4546 and 4082
The Appleton Tracy & Co. Watch
Figure 16. Three Early Movements from Robbins' factory in July 1857
Figure 16A. New Markings on AT&Co. Barrel Bridges
The C.T. Parker and P.S. Bartlett Watches
Figure 17. First Run C.T. Parker (S/N 1176) & P.S. Bartlett (S/N 1409)
Figure 18. 15J Chas T. Parker 8153 and 11J P.S. Bartlett 8406
Depression of 1857
American Watch Company
Figure 19. Rear view of the American Watch Company factory in 1865
The Chronodrometer Watch
Figure 20. Sporting Chronodrometer No. 13853
The Model 1859 KW18 Watch
Figure 21. Thinner 3/4 Plate Model 1859 KW18
The J. Watson and R.E. Robbins Watches
Figure 22. J. Watson S/N 23878, London
Figure 23. 11J R.E. Robbins 21580 and 11J P.S. Bartlett 33575
The Wm. Ellery Watch
Figure 24. Progression of the Wm. Ellery grade M57
Dennison Pocket Watch Cases
Figure 25. Aaron Dennison Used FFS Hallmark On This Case
The Home Watch Co. Watch
Figure 26. 11J Home Watch Co. Boston & 11J Wm. Ellery Waltham
The Waltham Watch Co. Watch
Figure 27. Waltham Watch Co Grade M57 882249
Upgrading the Grades
Figure 28. 15J AT&Co 365660 and 11J PSB 406849
Crescent Park and Martyn Square Watches
Figure 29. 15J Crescent Park and 7J Martyn Square
Central Park Watch
The Broadway Watch
Figure 30. Example Home and Broadway Grade M57 Movements
Remaining Model 57 Watches
Next Full Plate Models, 1870 and 1877
Figure 31. Model 70KW 520,176 and Model 77KW 1,652901
Custom Watches
Figure 32. Example Private Label Model 57 Watches
Figure 33A. Example Custom Model 57 Watches
Figure 33B. Example Modified Model 57 Watches
Fake Model 57 Watches
Figure 34. Fake Model 57 Wm Ellery and an AT&Co.
Figure 35. Appleton Tracy & Co. Model 57 Stem Wind
Position of Serial Number
Style of Engraving
Figure 36. Early Design Changes on the AT&Co. Grade Model 57
Dials
Figure 37. Dial Signed In Script On P.S. Bartlett 560619
Figure 38. Progression of P.S. Bartlett Model 57 Dials
Miscellaneous Features
Stop Works
Figure 39. Four Types of AT&Co. Model 57 Barrels
Figure 40. Three Types of AT&Co. Barrel Ratchet Arrangements
Top Plate Encircling Barrel
Figure 41. Top Plate Barrel Clearance
Stem Winds
Figure 42. Click Let-Down on Stem Wind Lever Set Movements
Figure 43. Waltham Watch Co. SWKS & Home Watch Co. SWKS
Figure 44. Inscription “Woerd’s Patents” On Train Side of SW Pillar Plate
Figure 45. Early Full “Rocking Bar” SW M57 Movement
Number of Jewels
Jewels
Figure 46. Size Range Of 3rd Wheel Plate Jewel On Model 57s
Jewel Settings
Figure 47. Fake Jewel Settings on P.S. Bartlett Model 57
Index Scale
Figure 48. Sprung Under Model 57 Hairsprings
Figure 49. Sprung Under Hairspring with Hidden Stud
Balances
Figure 50. Composition Balances (Closed/uncut & Expansion)
Hairspring
Figure 51. Sprung Under versus Sprung Over Hairspring
Banking Pins
Fogg’s Safety Center Pinion
Figure 52. C.W. Fogg’s patented safety center pinion
Table 2. Sample Movements finished after Feb 14, 1865, w/o “Fogg’s”
Figure 53. Date Inscription of Fogg’s Patent Safety Pinion
Table 3. Application of “Woerd’s Patents” & Fogg’s patent date
Dust Bands
Figure 54. Standard Model 57 Dust Band
Table 4. Dust Band Screws in Back Plate
Figure 55. Pre-1868 Dust Bands
Escapements
Figure 56. Right-Angle Model 57 Side-Lever Pallet
Figure 57. Six Designs of Model 57 Escape Wheel
Figure 58. Howard & Rice Club Tooth Escape Wheel
Figure 59. H&R Lever with Clear Vertical Pallet Jewels
Features Not Tracked
Types of Potances:
Figure 60. Four Types of Model 57 Potances
Table 5. Change in the ‘U’-bridge Potance to the Cantilevered Potance
Style of Click:
Figure 61. Pillar Plate Views of 1st Series Click and Spring
Winding Square Key Guards:
Train Speed:
Table 6. Train Speed of Different Movements
Types of Mainsprings:
Trivial Items:
Figure 62. Photo of Fitch Park from The Home of the Waltham Watch
Table 7. Summary Range of S/Ns at Which Feature was Introduced