Overview
During the mid 2000s, Omega introduced a Railmaster variant within its Seamaster Aqua Terra line, drawing inspiration from the iconic reference CK2914 from 1957. Like most Aqua Terra watches of this era, the new Railmaster edition was offerred in a diverse array of sizes, including 36mm, 39mm, 41mm, and a dramatically oversized 49mm unique to this series. At that time, the prevailing trend for large watches was at its peak, resulting in the bigger options being the more popular choices while the 36mm version remained readily available even after the discontinuation of the line in 2012.
Ironically, the recent shift back towards smaller watches has led to a surge in demand for the 36mm Railmaster, making it now the most sought-after size among collectors. However, due to its limited production numbers, acquiring this specific size has become increasingly difficult. Often compared to the similarly designed Rolex Explorer I, the 36mm Railmaster, with its charming proportions and perfectly symmetrical dial, offers quite a compelling proposition for those with enough patience, persistence, and good fortune to find one.
Specifications
Brand:
Omega
Model:
Seamaster Aqua Terra Railmaster
Reference:
2504.52
Year:
2010
Case Number:
84698173
Case Material:
Stainless steel
Diameter:
36 mm
Lug Width:
19 mm
Thickness:
11.1 mm
Lug-to-Lug:
43.7 mm
Dial:
Black
Lume:
Super-LumiNova
Crystal:
Sapphire
Movement:
Automatic
Caliber:
Omega 2403B
Bracelet/Strap:
Omega 1575 stainless steel bracelet with 899 end links
Max Wrist Size:
7.875 in (20.5 links)
Hand model has a wrist size of 6.1 in
Condition
Case: The stainless steel case shows minimal wear with only a few hairlines and faint nicks present. The overall impression is very clean. The faceted lugs remain thick and well-defined. The caseback is consistent with the rest of the case, showing light wear with no major imperfections. The backs of the lugs show light signs of prior bracelet removal. The brand, model, and serial number engravings remain sharp and legible.
Dial, Hands, & Crystal: The matte black dial is in pristine condition. The polished hands show some micro wear under a loupe but remain excellent overall. The Super-LumiNova across the dial and hands functions as expected and glows consistently. Both front and rear sapphire crystals shows a couple tiny micro scratches, but nothing major enough for Omega to recommend replacing at service.
Bracelet/Strap: The Omega stainless steel bracelet is in fantastic condition with only a few hairlines present and little-to-no stretching. The clasp opens and closes securely. The raised Omega logo remains crisp and detailed.
Performance
Functions: All functions including the crown winding and time setting are working as expected.
Service History: The watch underwent a full service by Omega that was completed on 04/07/2026.
