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AHO 1021

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AHO 1021 caliber

AHO 1021 caliber

Basic Information

Name	AHO 1021
Manufacturer	AHO
Launch Year	1960
Caliber Family	Description 1021: 10.5" , manual wind 1022: 10.5" , manual wind, small date 1121: 11.5" , manual wind 1122: 11.5" , manual wind, small date 1123: 11.5" , automatic 1125: 11.5" , automatic, small date 1166: 11.5" , manual wind, normal date 96 : 12" , automatic 961: 12" , automatic, small date 966: 12" , automatic, normal date 126: 11.5" , automatic, ball bearing suffix A: modified winding mechanism Related calibers AHO 1021, AHO 1021A, AHO 1022, AHO 1022A, AHO 1121, AHO 1121A, AHO 1122, AHO 1122A, AHO 1166, AHO 1166A, AHO 126
Is COSC certified	No

Technical Details

Lignes Dimensions	10.5 ‴
Dimensions	23.69 mm
Height	4.4 mm
Further Measures	Mounting Diameter (Dm): 23.3mm Stem height (T): 2.2mm Mounting Height (F): 1.6mm
Power Reserve	39 hours
Frequency	18,000 vph
Jewels	21

Complications and Specifications

Shape	Round
Complications	Sweep Second Moon Phase
Shock Protection	Incabloc
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	1.49 x 0.89 x 0.20mm
Hand Count	3
Country Of Manufacture	(not set)
Notes	Other data: balance staff: U2129 stem: W2311 mainspring / battery: Zf1042, 1.40 x 9.5 x 0.11 x 290mm balance staff ronda: 4116 (10,5) balance staff ronda: 4858 (10,5) stem ronda: 1120 (10,5) Mainspring: 1.400 x 9.000 x 0.105 x 300.000 mm Ranfft mentioned about this caliber: There are variants with this quantity of jewels 17, 21
Signature	ca. 1960: 17 Jewels; Incabloc (AHO 1021A)

Metadata

Created At	Sep 15, 2023
Updated At	Apr 23, 2025, 11:30:47 PM