A. Lange & Söhne · Saxonia

Strap for Datograph Perpetual Tourbillon Honeygold / Lumen

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference740.055FE
FamilySaxonia
MovementA. Lange & Söhne caliber L952.1 Hours, Minutes, Small Seconds, Additional 24 Hour Hand (fixed) | Big Date, Day, Leap Year, Month, Perpetual Calendar | Chronograph, Column wheel, Flyback | Moonphase
CaseHoney Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Saxonia 740.055FE

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Saxonia 740.055FE, seen from the bench

The A. Lange & Söhne Saxonia features the in-house caliber L952.1 with perpetual calendar, flyback column-wheel chronograph and moon phase complications. The movement integrates hour, minute, small seconds, fixed 24-hour hand, big date, day, month and leap year indications. The watch has 20mm lugs and a leather strap.

Frequently asked questions

What is the lug width of the A. Lange & Söhne Saxonia 740.055FE?

The lug width of the Saxonia 740.055FE is 20 mm. This specific measurement reflects the construction proportions of the 41.50 mm case and requires a strap expressly designed for this dimension. Always verify compatibility by placing a ruler between the lugs: the free space must correspond exactly to 20 mm.

Which strap material is most suitable for the Saxonia 740.055FE?

Alligator leather represents the ideal choice for this watch: the uniform scales and natural patina that develops over time create a perfect aesthetic dialogue with the silver-brushed dial and honey gold case. Alternatively, vegetable-tanned calf leather offers a more rural yet refined character, whilst shell cordovan ages beautifully, acquiring cognac tones that accentuate the golden warmth of the case.

How do I change the strap on the Saxonia 740.055FE?

Strap replacement is performed using a spring bar tool: insert the lever into the side slot of the lug, lift the elastic pin slightly until it clicks, then remove the old strap. For the new strap, align the holes at the lug extremities and press the pin until an audible click is heard. Always verify that the pin is fully inserted before wearing the watch. If unfamiliar with the process, entrust the work to Casati Milano for professional execution.

Can I use an aftermarket-compatible strap with the Saxonia 740.055FE?

Yes, any strap with a 20 mm lug width is compatible with the Saxonia 740.055FE. However, to preserve the elegance and value of the watch, we recommend selecting noble materials such as alligator, vegetable-tanned calf or shell cordovan. On milanostraps.it you will find a curated selection of 20 mm artisanal straps that respect the qualitative standards of the piece.

How long does a leather strap last on the Saxonia 740.055FE?

A high-quality leather strap, such as alligator or shell cordovan, typically lasts 3–5 years with daily wear and regular maintenance. Durability depends on wear of the keeper (the loop that bends during closure) and the buckle: on a Saxonia fitted with an oro clasp, longevity extends as the snap mechanism distributes stress more evenly. Periodically rotating between two straps significantly extends the life of both.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only