E. Howard Watch Co. (Keystone) Pocket Watch: Serial Number 1237961 (Grade Series 0)

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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1237961

Access Date: April 20, 2024

Due to the lack of existing factory records, our E. Howard Watch Co. (Keystone) database has been reconstructed using observations of known watches.
As a result, the information may contain inaccuracies. Please let us know if you have details that can improve the database.

From the American Horology Archive:

E. Howard Watch Co. (Keystone)

Grade: Series 0

Ruby Banking Pins

Manufacturer:	E. Howard Watch Co. (Keystone)
Manufacturer Location:	Waltham, Massachusetts
Movement Serial Number:	1237961
Grade:	Series 0
Variation:	Hooked Bridge Jeweled Banking Pins
Model:	1907
Estimated Production Year:	1913
Run Quantity:	200
Grade/Model Run:	25 of 29
Grade/Model Total Production:	16,500
Variant Est. Production:	1,200 (16S-M1907-23J-ONP-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS)
Size:	16s
Jewels:	23j
Jewel Material:	Ruby & Sapphire
Movement Configuration:	Openface
Movement Finish:	Nickel
Movement Setting:	Pendant
Plate:	Bridge Plate
Bridge Type:	Center
Double Roller:	Yes
Barrel:	Going
Regulator:	Reed
Hairspring:	Breguet
Standard Dial Type:	Double-Sunk
Adjusted:	Yes
Adjusted to Position:	Yes
Adjusted # of Positions:	5
Adjusted to Temperature:	Yes
Adjusted to Isochronism:	Yes
Railroad Grade:	No
Dial Feet Locations:	10.7, 24.3, 48.9
U.S. Patents:	796162, 886387, 900183, 978612, 981667, 1062645
Case:	Various
Run ID:	278.G26.16S175.161907M79.O178.P181.23J36
Database Version:	v52.235
Advanced Metrics
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration	38.08
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration	126.53
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration	2.448%
Registry Population:	4 (2.00%)
$ Estimated Value (12 Month Change):	-13.98% Analyzing 89 Sales

Value Guide

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Production Metrics Tree: Grade Series 0

Target Profile: 16S-M1907-23J-ONP-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS

E. Howard Watch Co. (Keystone) Grade Series 0 (All Variations): 17,250 ETP
16S: 17,250 100.00% 16s, Grade Series 0
16S-M1907: 16,500 95.65% 16s, Grade Series 0, Model 1907		Other: 750 Other Models or Unclassified
16S-M1907-23J: 16,500 95.65% 16s, Grade Series 0, Model 1907, 23 Jewels
16S-M1907-23J-ONP: 2,950 17.10% 16s, Grade Series 0, Model 1907, 23 Jewels, Openface/Pendant/Nickel	Other: 13,550 Other Configs or Unclassified
16S-M1907-23J-ONP-A5PTI: 2,950 17.10%
16S-M1907-23J-ONP-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS: 1,200 6.96%

Population Registry for This Run

	Image	Serial Number	Run Position	Primary Identification Method	Discovery Date
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