Rolex · Bubbleback

Strap for Rolex Bubbleback 5050

The Rolex Bubbleback 5050 takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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  • Ships in 1–3 working days
  • Worldwide shipping
  • 30-day returns
  • 12-month warranty on manufacturing defects
  • Hand-stitched in Milan
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Lug width17 mm
Case diameter31 mm
Reference5050
FamilyBubbleback
MovementManuale
Year1940s
CaseStainless Steel
CrystalPlastic
Water resistance30

Recommended spring bar

Vintage Rolex Bubbleback spring bars — narrow lugs

Verified compatibility for this reference · lug 17 mm · Ø 1.5 mm

All Rolex spring barsOpen →
Rolex Bubbleback 5050 — watch

What length do I need?

Measure your wrist with a tailor's tape or a piece of string, comfortably snug.

Wrist circumferenceLength (long side / short side)
15.0–16.4 cm110 / 70 mm
16.5–17.8 cm115 / 75 mm
17.9–19.0 cm120 / 80 mm
19.1–20.4 cm125 / 80 mm
20.5–21.6 cm130 / 85 mm
21.7–22.9 cm135 / 85 mm
over 22.9 cmon request

The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.

What I'm asked about the Rolex Bubbleback 5050

What strap size does the Rolex Bubbleback 5050 take?

The Rolex Bubbleback 5050 needs 17 mm between the lugs. It's the size I've been fitting on it for years.

Can the strap on the Rolex Bubbleback 5050 be changed?

Yes, and easily: the lugs are drilled, so the spring bar is pushed out from the outside with a thin pin, without opening anything. If you prefer, I do it in the workshop.

Can I put a leather strap on the Rolex Bubbleback 5050?

Yes, in 17 mm leather. On a 31 mm case a calf strap works every day; if you want something more, alligator.

Which strap do you recommend for the Rolex Bubbleback 5050?

A 17 mm calf strap, for every day. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.

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

Bespoke straps for Rolex, in the atelier or by video call: casatimilano.com

Updated on · by Antonio Zichichi