The Basics

The Osmior Automatic Single Push-Piece Chronograph was first introduced at BaselWorld 2013, being one of the first watches of the reborn L.Leroy brand. It features a case of 41mm, housing a monopoussoir chronograph based on a Vaucher ebauche. The present version has a pink gold case and a black dial.

Brand: Leroy
Family: Osmior Range
Reference: LL101/2
Name: Osmior Automatic Single Push-Piece Chronograph Black
Produced: 2013
Limited: No

Below is a detailed look at Leroy’s model LL101/2 from Osmior Range watch family, including the price, case details and movement features.

Leroy Osmior Range LL101/2

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The Details

Leroy’s Osmior Automatic Single Push-Piece Chronograph Black (LL101/2) was originally released in 2013. This watch features a automatic movement beating at a frequency of 28800 bph (4 Hz) to provide a 48-hour power reserve when fully wound.

The Case

The pink gold case measures 41mm in diameter and roughly mm thick. The round case is paired with a black color dial with -shaped hands, and a arabic numerals hour markers and minute track, covered by a sapphire glass. Leroy’s Osmior Range model LL101/2 is water resistant up to 50 meters (164 ft). A display caseback is over the back of the watch case.

Material: Pink gold
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 41mm
Height: mm
Lug Width: N/Amm
W/R: 50

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Osmior Range LL101/2 movement is a powered by caliber L411.1 made by Leroy. The 48-jewel automatic movement is 30mm in diameter. Its balance wheel oscillates at 28800 semi-oscillations per hour or 4 Hz. This movement offers a 48-hour power reserve.

Type: Automatic
Brand: Leroy
Caliber: L411.1
Base: Vaucher VMF 3002 / H,M,S6H,D
Display: Analog
Diameter: 30mm
Jewels: 48
Reserve: 48 hours
Frequency: 28800 bph
Time: Hours, Minutes, Small Seconds
Chronograph: Chronograph, Monopoussoir

The Price

How much does the Leroy’s Osmior Range LL101/2 cost? This watch was introduced in 2013 and has been in Leroy’s collection for around . This watch is not a limited release. As with most luxury watches, the price of depends on the availability and demand.

CURRENT PRICE: Not Available

For more information, visit Leroy online.


  • Brand: Leroy
  • Model: Osmior Automatic Single Push-Piece Chronograph Black
  • Reference Number: LL101/2
  • Limited: No

Case & Dial:

  • Material: Pink gold
  • Glass: Sapphire
  • Back: Display
  • Diameter: 41
  • Thickness:
  • Lug Width: N/A
  • Dial Color: Black
  • Indexes: Arabic Numerals and -shaped hands
  • Water Resistance: 50 meters


  • Winding: Automatic
  • Brand: Leroy
  • Caliber: L411.1
  • Display: Analog
  • Diameter: 30mm
  • Jewels: 48
  • Power Reserve: 48 hours
  • Frequency: 28800 bph
  • Functions: Hours, Minutes, Small Seconds

About Leroy

Leroy logo

The L. Leroy brand considers itself the heir to an exceptional heritage, handed down through the generations since 1785. Over 220 years of history have shaped the House of L.Leroy, which has written some of the finest chapters in the history of French watchmaking and chronometry, supported in its endeavours by two dynasties of brilliant craftsmen, inspired as much by the applied arts as by … science. The company philosophy is based on this extraordinary past, which daily nurtures its vision of the future. The L. Leroy brand aims to encapsulate the breadth of knowledge acquired in luxury watchmaking products, using avant-garde techniques and boasting timeless designs. The name of the company was changed from L. Leroy to just Leroy in 2015. Leroy is part of the Festina Group group.

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