History 7 min read
Hamilton Murph: a watch with a story to tell
From Interstellar to everyday life: the story behind the Hamilton Murph 42 mm, the detail hidden on its seconds hand, and how to choose a strap that makes it yours.
IWC Schaffhausen · Portugieser
Portugieser Perpetual Calendar 5023
Ref. IW502306
Watch details and strap advice
- Case diameter
- 44.2 mm
- Case height
- 15.5 mm
- Case shape
- Round
- Water resistance
- 30 m
- Caliber
- 51613
- Dial
- Silver
The IWC Schaffhausen Portugieser Perpetual Calendar 5023 Red Gold / Silver takes a 22 mm strap: measure between the lugs and that is the only number you need. We list 36 straps in that width. With a 44.2 mm case and 30 m of water resistance, a thicker strap balances the case. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.
Straps by lug width (22 mm) 36
All 36 22 mm strapsWidth is a starting point. Check the case and end fittings before choosing.
-
Heritage CuffLeather€27.90 -
Rivet CuffLeather €29.90 -
Slim Colour LeatherLeather€24.90 -
Rivet RallyLeather€49.90 -
Dense Mesh SteelSteel€34.90 -
Diagonal WeaveNylon€24.90 -
Regatta StripeNylon€22.90 -
Camouflage Five RingNylon€27.90 -
Square Slot SiliconeSilicone€22.90 -
Vintage RallyLeather€34.90 -
Denim StitchNylon€22.90 -
Aviator BundLeather€39.90
Read before you choose
All stories
Tutorial 6 min read
How to change a watch strap
Identify the attachment, release the correct part and check that both tips are seated. Illustrated instructions for quick-release bars, conventional bars and nylon pass-through straps.
Tutorial 4 min read
How to measure your watch lug width
Measure between the inner lug faces, read the ruler correctly and separate watch width from buckle width. A practical guide to confirming the size before choosing a strap.