Strap for Lyre 25 Automatic PVD Gold / White

The Longines Lyre L4.360.1.12.7 features a lug width of 13 millimetres (13mm). This non-standard dimension is characteristic of classic women's watchmaking from the 1960s and must be verified with callipers before ordering a strap, as most commercial offerings present 16mm, 18mm, or 20mm widths.

For the L4.360.1.12.7, we recommend a vegetable-tanned alligator strap in 3.5–3.8mm thickness, or oil-finished calf leather in cognac or antique brown tones. These materials emphasise the discreet elegance of the 25mm case and permit natural patina development over time. Avoid NATO, data-link, or fabric straps that compete chromatically with the compact proportions of the timepiece.

The strap is replaced by extracting the spring bars from the lugs using a dedicated spring bar tool. Position the tool in the lateral hole of the bar and press inward to release the end, then repeat on the opposite side. Do not apply excessive force to prevent damage to the case. If unfamiliar with the procedure, consult a specialist watchmaker.

Yes, it is possible to fit quality aftermarket straps provided the lug width is exactly 13mm. Verify that the maximum thickness does not exceed 4.2mm to avoid compromising the lug geometry. We recommend artisanal straps from producers specialising in historic dimensions rather than universal straps of uncertain calibration.

A quality artisanal alligator or calf leather strap lasts between 7 and 15 years of daily wear, depending on tanning method, thickness, and maintenance. Vegetable tanning ages naturally, developing rich patina. Prolonged direct sunlight exposure, acidic perspiration, and extreme humidity accelerate deterioration. Gentle monthly cleaning with a dry cloth and reconditioning every 4–5 years substantially extends durability.