Technical Archive

Junghans
Max Bill 027/3500.00— lug 20mm

Junghans Max Bill 027/3500.00: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Max Bill Automatic Silver No-Date

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Junghans 027/3500.00
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

027/3500.00

Movement

Junghans caliber J800.1 Hours, Minutes, Seconds | Date

The Heritage

The Junghans Max Bill Automatic 027/3500.00 is a 38mm stainless steel watch embodying Bauhaus design principles established by Swiss architect Max Bill in 1961. It features a Junghans caliber J800.1 manual-wind movement visible through a display caseback, with hours, minutes, seconds, and date displayed on a white dial with minimal Arabic numerals and thin black hands. The case and all surfaces are satin-finished stainless steel. The 20mm lug width is characteristic of the original Max Bill design, requiring precise measurement between lug pins on the inner side where the strap actually sits.

FAQ

What is the lug width of the Junghans Max Bill 027/3500.00?

The Junghans Max Bill 027/3500.00 has a lug width of 20 millimetres, measured internally between the lugs. This is a non-standard measurement, almost exclusive to the Max Bill family. To verify correctly, place a metal ruler inside the lugs, without forcing, and read the value between the contact points of the spring bars.

Which strap should I choose for the Max Bill 027/3500.00?

European vegetable-tanned calf leather is the ideal choice: the natural patina that develops over time harmonises with the minimalist philosophy of the dial. Anthracite grey alligator offers graphic sobriety. Silvered shell cordovan creates introspective depth. Natural NATO provides a coherent sports solution. Black rubber maintains formal purity. Every option must avoid embroidery and decorations: the Max Bill refuses them.

How do I change the strap on my Junghans Max Bill 027/3500.00?

Remove the old strap using a spring bar tool or gentle lateral pressure to free the bars from the lugs. Insert the new 20mm strap pins into the lug housings and verify they click fully. If the strap has a deployante, ensure it faces the case back. Test security by pulling gently: it should not detach. If preferred, Atelier Casati Milano offers replacement services with sartorial precision.

Can I use aftermarket straps compatible with the Max Bill?

Yes, provided they respect the 20mm lug width specification. Always verify that the strap is specifically designed for this width: standard 18mm or 22mm straps will not fit correctly. Milano Straps artisanal straps are custom-built for the 027/3500.00 and guarantee geometric and constructive compatibility. Avoid budget-tier uncertified straps: the Max Bill deserves precision.

How long does a leather strap last on the Max Bill 027/3500.00?

A quality calf strap, vegetable-tanned, lasts 3–5 years in daily wear, developing patina that amplifies character. Shell cordovan reaches 7–10 years. Durability depends on perspiration, humidity exposure and maintenance. Vegetable-tanned leather requires occasional cleaning with a soft cloth. Milano Straps artisanal straps use European leathers selected for longevity and beautiful ageing.