Strap for PrimaLuna Quartz 23 Pink Gold Diamond

The Longines PrimaLuna L8.109.9.78.6 features a lug width of 6 millimetres. This is a specific dimension, smaller than the standard 18-20mm, reflecting the compact 23mm case proportions. To verify the correct measurement, use a digital calliper and measure the internal distance between the two case lugs.

For a rose gold 18-carat model such as the PrimaLuna, we recommend alligator in cognac, dark brown, or taupe grey tones, which harmonises elegantly with the precious case. Alternatively, vegetable-tanned calf leather in black or dark brown, or shell cordovan which develops a patina over time that complements rose gold beautifully. Avoid bulky straps that would disrupt the visual balance of the 23mm case.

Strap replacement requires a spring bar removal tool to extract the spring-loaded pins from the case lugs. Gently insert the tool into the side slots of the lug, press downward to release the bar, then remove the old strap. Insert the new strap into the holes, ensuring the spring bar pins lock securely into place. If you prefer to avoid risk, contact the Casati Milano atelier for professional replacement.

All straps with a 6mm lug width are compatible with the Longines PrimaLuna L8.109.9.78.6. On milanostraps.it you will find a dedicated collection of 6mm straps in various materials—alligator, calf leather, shell cordovan, rubber—customisable in length, initials, and stitching thread colour. The Casati Milano atelier also offers bespoke straps constructed to order with personal selection of hides.

The lifespan of a leather strap depends on frequency of wear, climatic conditions, and tanning quality. High-quality alligator or shell cordovan with vegetable tanning typically resists 3-5 years under normal conditions; premium calf leather 2-4 years. Exposure to humidity, perspiration, and temperature fluctuations reduces longevity. Casati Milano straps come with 18-month warranty and can be refurbished or replaced at the atelier.