A coronary angiogram (an X-ray with radiocontrast in the coronary arteries) that shows the left coronary circulation. The distal left main coronary artery (LMCA) is in the left upper quadrant of the image.
U-Boat Watches - Back in 1942 the Officine Fontana was poised to produce a professional watch for the distinguished officers of its navys U-Boats. Though the project was ultimately scrapped, the distinctive original drawings, color samples and innovative materials were lovingly preserved for more than 60 years.
The Submariner model went into production in 1953 and was showcased at the Basel Watch Fair in 1954. The assigned case reference number of this first Submariner was either 6204 or 6205. It is unclear which model came first; in any event, the two watches are nearly identical.