The Seamaster 300 is a historically significant dive watch produced by Omega, a renowned Swiss watchmaker. Introduced in 1957, the Seamaster 300 was designed for professional divers and quickly gained popularity for its robustness, water resistance, and innovative features. This model is a  great example from 1961.:and astonishingly still has box and papers.

Here are some key features and points of interest about the Omega Seamaster 300 .

1. Design: The Seamaster 300 from the early 1960s featured a classic and functional design that was both stylish and purpose-driven. The case design was characterized by a combination of sharp and angular lines, reflecting the design aesthetics of that era.
2. Water Resistance: The name “Seamaster 300” indicates its water resistance up to 300 meters (1000 feet), which was a remarkable feat during the 1960s. The watch was designed to withstand the pressures and challenges of professional diving.
3. Bezel: The original Seamaster 300 models typically featured a bi-directional rotating bezel with minute markings, allowing divers to measure elapsed time underwater. The bezel played a crucial role in calculating diving times.
4. Dial: The dial of the Seamaster 300 has bold, easily readable hour markers and hands, often with luminescent material for enhanced visibility in low-light conditions. Some models had a distinctive crosshair pattern on the dial.
5. Movement: The Seamaster 300 models from the 1960s were powered by Omega’s caliber 552 or 565, which were automatic (self-winding) movements. These movements were known for their reliability and accuracy.
6. Collectibility: Vintage Seamaster 300 watches, especially those from the 1960s, have become highly collectible due to their historical significance, association with diving history, and Omega’s reputation for quality. Their rarity, condition, and provenance all contribute to their value among collectors.
7. Lume and Patina: Over time, the luminescent material on the hands and hour markers may develop a patina, which can add character to the watch. Collectors often appreciate well-preserved patina as it gives the watch a vintage charm.