Discuss calibers, share photos, and improve our database together on Discord Join Community

Updates to data and images are welcome from our readers.

Pierce 105 (SC)

Update

Pierce 105 (SC) caliber

Pierce 105 (SC) caliber

Basic Information

Name	Pierce 105 (SC)
Manufacturer	Pierce
Launch Year	1950
Is COSC certified	No

Technical Details

Lignes Dimensions	10.5 ‴
Dimensions	23.69 mm
Height	4.2 mm
Further Measures	Mounting Diameter (Dm): 23.3mm
Power Reserve	39 hours
Frequency	18,000 vph
Jewels	17

Complications and Specifications

Shape	Round
Complications	Sweep Second Perpetual Calendar
Regulator Type	Pinned Regulator (or Index Regulator)
Movement Type	Manual
Escapement Type	Swiss Lever
Control Type	Balance Wheel
Winding Type	Stem Winding (Crown)
Setting Type	Stem Set (Crown Pull)

Additional Information

Hand Sizes	1.40 x 0.80 x 0.18mm
Hand Count	3
Country Of Manufacture	Switzerland
Notes	Remarks: with same designation variants with sub second, sweep second, sweep second and date Other data: balance staff: U2306 stem: W2390 mainspring / battery: Zf1211, 1.50 x 9.0 x 0.10 x 290mm
Signature	ca. 1950: Pierce Lever, Pierce, Swiss, 17 Jewels
Import Codes	PXA — Pierce S.A.

Metadata

Created At	Sep 15, 2023
Updated At	Jan 28, 2024, 9:01:22 PM