What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
The Leonidas Triple Calendar Moon Phase in Balazs Ferenczi’s 2015 feature is a 1950s reference 0151 with a 35 mm stainless-steel case, a full calendar and a moon-phase display. Its appeal is part of the story: Ferenczi describes a watch that needed a watchmaker, was restored, and became a dress watch he enjoyed wearing. It is one owner’s account, not a universal specification or a performance test.
What is a Leonidas triple calendar moon phase watch?
It combines three calendar indications—month, day of the week and date—with a moon-phase aperture. The calendar is not perpetual, so it does not automatically account for every month’s length or leap years. The feature describes small case correctors for adjusting calendar indications and the moon-phase disc, but does not provide a complete safe-setting sequence. On a vintage watch, ask a watchmaker how to set the particular example rather than assuming a generic procedure.
What does the featured reference 0151 look like?
Ferenczi’s Fratello Watches feature describes his individual watch as a 1950s stainless-steel reference 0151, with a 35 mm case diameter excluding the crown. He notes a domed crystal, beige dial, gold-colored numerals, blue calendar markings and a red-tipped date pointer. These details describe his example; they should not be treated as specifications for every Leonidas calendar watch. Fratello Watches’ 2015 feature is the source for the watch and the owner’s account.
Movement: verify the individual watch
The movement attribution is not consistent across descriptions. Ferenczi says his watch uses an ETA 1100 as a base caliber with an added calendar and moon-phase module. A Watch-Time listing also attributes an ETA 1100, while an EveryWatch listing for a reference 0151 reports a Valjoux 90. Olde Timers describes another archived steel example with a 1100-caliber movement. These are source-specific reports, not proof of one movement specification for all examples; the available descriptions do not resolve the discrepancy.
Free tools Windows power users keep installed
One-click scans. No signup required.
#1 Best Overall
- 【Multifunctional Design: Calendar & Moon Phase】Watch features a multi-functional design with a calendar and moon phase display, offering both practicality and style. Perfect for business professionals, it adds a touch of sophistication to any work or formal occasion.
- 【High-Quality Automatic Movement: Precision Timekeeping】Equipped with a high-quality automatic movement, this watch offers precise timekeeping without the need for batteries. Its self-winding mechanism ensures reliable accuracy, while the transparent case back reveals the exquisite craftsmanship of the mechanical movement, making it a true collector's piece.
- 【Durable Leather Strap & 3ATM Water Resistance】Crafted from premium leather, the strap offers exceptional durability and comfort for everyday wear. With 3ATM water resistance, it can handle splashes, rain, and handwashing, ensuring reliable performance in various situations.
- 【Perfect Gift Choice: Versatile for All Occasions】A stylish and versatile watch that makes the perfect gift for yourself, your family, or loved ones. Whether for a birthday, anniversary, or special occasion, this watch pairs effortlessly with any outfit and suits every setting, from casual to formal.
- 【Shop with Confidence: 30-Day Return & 24-Month Warranty】Shop with confidence knowing that we offer a 30-day hassle-free return policy and a 24-month warranty on all our automatic watches. Our dedicated customer service team is always ready to assist you with any questions or concerns, ensuring a seamless shopping experience.
For a particular watch, have a qualified watchmaker inspect the movement and compare its markings with the seller’s documentation. A dial name or reference alone does not settle which caliber is inside or establish the condition of the calendar mechanism.
Restoration and wearing experience
Ferenczi says his example needed a skilled watchmaker and recounts sourcing a donor movement before sending the watch to 10ora10.hu for restoration. He wrote: “In short: they did an amazing job resurrecting my watch and just a couple of weeks ago they brought me back my Leonidas Triple Calendar Moon Phase.” That is his personal assessment of the restoration, not an independent review or a guarantee that other examples will be straightforward to repair.
Rank #2
- Dual Calendar Functionality – Features a practical day and date display for enhanced utility, making it ideal for daily wear and professional use
- Versatile Case Compatibility – Engineered to fit watch cases with 3, 3.8, or 4 o’clock crown positions, offering broad flexibility for modders and repairers
- Clear Green Luminous Markers – Provides excellent low-light visibility with bright, long-lasting green luminescence for readability in any environment
- Wide Movement Support – Compatible with NH35, NH36, and 4R36 automatic movements, ensuring reliable performance across popular mechanical platforms
- Durable & Stylish Build – Made from wear-resistant materials with an elegant design to reflect personal style while ensuring longevity
He describes the watch as suiting his wrist and wearing it as a dress watch. The 35 mm measurement belongs to his example, and fit depends on the wearer as well as the watch’s proportions and strap. The feature does not report controlled accuracy, durability or water-resistance testing.
Leonidas background
Ferenczi’s feature says Leonidas was founded in 1841 by Julien Bourquin in St-Imier, acquired by Constant Jeanneret-Droz in 1912, and merged with Heuer in 1962. It also describes the brand as making chronographs and calendar/moon-phase watches. Those historical details are reported by the feature; they are not independently established here through factory or corporate records.
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchRank #3
- Brand new and high quality.
- Product material is strong, durable, long service life.
- Can be used as a spare parts to facilitate the replacement of your movement.
- Single calendar 3 hands movement, high accuracy.
- Replacement for 2813 8215 Movement
What to check before buying one
- Reference and movement: Compare the watch’s markings and seller documentation, and have the movement checked rather than inferring its caliber from the dial name.
- Condition and originality: Examine the dial, hands, case, crystal and calendar correctors. Related listings describe watches that differ in reference, era and materials.
- Service evidence: Ask when it was last serviced and whether the watchmaker has assessed both calendar and moon-phase functions. A restoration story about one example is not a condition report for another.
- Dimensions and material: Confirm the exact case measurement and material for the watch being offered. Related examples are described in steel, gold plate and gold; the featured reference 0151 is described as steel and 35 mm excluding the crown.
- Seller terms: Review documentation, authenticity claims, return conditions and what functions the seller has actually checked. Dealer and marketplace descriptions are not factory records.
Dealer and marketplace pages show related Leonidas calendar watches, but their descriptions concern particular listings and may change. They do not establish a current fair price for the exact reference 0151: the available examples are not a comparable set of verified completed sales.
Quick Recap
Rank #4
- Suitable movement: NH35/ NH36/ 4R/ 7S movement
- Dial diameter: 28.5mm
- Grip: 3 o'clock 3.8 o'clock 4.2 o'clock Grip
- Dial Thickness : Single Layer
- Case Shape : Round
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
