Girard-Perregaux · 1966

Strap for 1966 Annual Calendar Equation of Time White Gold

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

Lug width20 mm
Case diameter40 mm
Reference49538-53-133-BK6A
Family1966
MovementGirard-Perregaux caliber GP03300-0010 Hours, Minutes, Small Seconds | Date, Month | Equation of time
CaseWhite 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 1966 49538-53-133-BK6A

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The 1966 49538-53-133-BK6A, seen from the bench

The Girard-Perregaux 1966 reference 49538-53-133-BK6A is equipped with the manufacture caliber GP03300-0010 with indication of hours, minutes, small seconds and complications of date, month and equation of time. The movement integrates the equation of time function that displays the difference between true solar time and mean civil time. The model is part of the 1966 collection that revisits the classic aesthetic codes of the Swiss manufacture.

Frequently asked questions

What is the lug width of the Girard-Perregaux 1966 reference 49538-53-133-BK6A?

The lug width of the Girard-Perregaux 1966 ref. 49538-53-133-BK6A is 20mm. This dimension, measured between the inner walls of the lugs, is the determining factor for strap compatibility. It is recommended to verify with a precision calliper before purchasing, positioning the tool at the attachment point between case and original strap.

Which strap is most suitable for the Girard-Perregaux 1966 49538-53-133-BK6A?

For the Girard-Perregaux 1966 in white gold, medium brown alligator is the classic choice that enhances the case's luminosity. An equally refined alternative is shell cordovan with vegetable tanning, which develops patina over time. For everyday versatility, hemp NATO or calf leather with deployante clasp offer practicality without compromising quality.

How do I change the strap on a Girard-Perregaux 1966?

Strap replacement involves extracting the attachment pins (spring bars) connecting the strap to the case lugs. Use a dedicated spring bar tool to gently press the pins and remove them. Position the new strap by aligning the holes, then reinsert the pins until they click into place. Professional assistance is recommended to avoid damage to the white gold lugs.

Can I use an aftermarket strap on this Girard-Perregaux?

Yes, any strap with a 20mm lug width is compatible. Milano Straps offers handcrafted straps in alligator, shell cordovan, calf leather and FKM rubber specifically dimensioned for this width. Our manufacturing quality ensures durability and aesthetics worthy of the ref. 49538-53-133-BK6A.

How long does a leather strap last on a Girard-Perregaux 1966?

A leather strap with vegetable tanning has an estimated lifespan of 3-5 years with daily use, extendable to 7-10 years with careful maintenance (protection from moisture, rotation with other straps). Durability depends on leather quality, frequency of use and environmental conditions. Milano Straps uses leather selected from Europe's finest tanneries to maximise longevity.

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.

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