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Fortis638.18.31
No catalog photo for this reference yet. See photos in the eBay listings below.

Fortis · Cosmonautis

Fortis Official Cosmonauts Chronograph Monolith 638.18.31

Ref. 638.18.31

Specifications

Brand
Fortis
Collection
Cosmonautis
Reference
638.18.31
Case diameter
42 mm
Case thickness
15.5 mm
Lug width
20 mm
Case material
Stainless steel
Case shape
Round
Dial
Black dial
Markers
Arabic numerals
Hands
Stick
Bezel
Rotating dive bezel (0–60)
Crystal
Sapphire crystal

Current eBay listings for the Fortis 638.18.31

Asking prices on eBay, not sale prices. Check condition, papers and seller feedback on each listing.

All 638.18.31 listings on eBay

Other Cosmonautis references

All 14 Cosmonautis references
ReferenceSizeCaseDial
638.18.3142 mmstainless steelblack
623.10.4140 mmstainless steelblack
623.10.4240 mmstainless steelwhite
623.10.5140 mmstainless steelblack
623.10.5240 mmstainless steelwhite
623.10.7140 mmstainless steelblack
623.18.7140 mmstainless steelblack
647.28.8142 mmtitaniumblack
638.10.1142 mmstainless steelblack
638.28.1342 mmtitaniumblack
647.10.1142 mmstainless steelblack
647.28.1342 mmtitaniumblack
647.18.3142 mmstainless steelblack
647.27.1142 mmtitaniumblack

More from Fortis. Specs come from our catalog; if something looks wrong, email us and we'll check it.