Otero 1391 – interchangeable spare parts

Otero 1391 movement

Which spare parts fit the Otero 1391 movement? For every part you can see which other calibers use the same part according to the original Otero spare-part labels. We do not have an original interchangeability list from the manufacturer.

7Parts with interchange data

9Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original Otero spare-part labels; we do not have an original interchangeability list from the manufacturer. All information has been carefully checked but is provided without guarantee. Please verify the interchangeability yourself before fitting, especially the height, diameter and execution of the part.

🛒 Spare parts for Otero 1391 in our shop

Date Indicator for OTERO 371, 391, 1371, 1391 – Part 2557 – NOS13,90 € incl. VAT *View item ›

Center Wheel for OTERO 137, 139, 1371, 1391 – Part 20112,90 € incl. VAT *View item ›

Crown Wheel for OTERO 37, 39, 58, 137, 139, 371, 391, 581, 1371, 1391 – Part 4209,95 € incl. VAT *View item ›

Escape Wheel and Pinion, Part 702, for OTERO 37, 39, 58, 137, 139, 391, 581, 1371, 139114,90 € incl. VAT *View item ›

🔧 Interchangeable parts

Part no.	Description	Also fits
307/1	regulator	Otero 37 Otero 39 Otero 137 Otero 139 Otero 371 Otero 391 Otero 1371
415	ratchet	Otero 37 Otero 39 Otero 58 Otero 137 Otero 139 Otero 371 Otero 391 Otero 581 Otero 1371
420	crown wheel	Otero 37 Otero 39 Otero 58 Otero 137 Otero 139 Otero 371 Otero 391 Otero 581 Otero 1371
440	Yoke spring	Otero 37 Otero 39 Otero 137 Otero 139 Otero 371 Otero 391 Otero 1371
443+5443	Setting lever with screw	Otero 37 Otero 39 Otero 58 Otero 137 Otero 139 Otero 391 Otero 1371
702	escape wheel	Otero 37 Otero 39 Otero 58 Otero 137 Otero 139 Otero 391 Otero 581 Otero 1371
2535	Date indicator guard	Otero 371 Otero 391 Otero 1371

Source: checked original Otero spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for Otero 1391 (height × diameter × thickness × length) and matching mainspring in our shop:

Otero 1391: 1.20 × 6.5 × 0.08 × 220 mm (GR 2869)

🔗 Movements sharing the most parts

→ All calibers of Otero

❓ Frequently asked questions

Which Otero 1391 spare parts also fit other movements?

For the Otero 1391, 7 part numbers are listed as interchangeable. Together they fit 9 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the Otero 1391?

The most shared parts: Otero 391 (7 parts), Otero 1371 (7 parts), Otero 37 (6 parts).

Which mainspring fits the Otero 1391?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.20 × 6.5 × 0.08 × 220 mm (GR 2869, hand-wound, normal end hook).