- The IWC Ingenieur was introduced in 1955, featuring the calibers 852 (time only) and 8521 (date), a new winding system developed by Albert Pellaton. It was an anti-magnetic wristwatch with a soft iron inner-case and dial.
- The first generation of ref. 666A Ingenieurs was produced in a variety of dial styles and in both stainless steel and 18k gold, and are sought after by collectors.
- The present example features unusual elongated baton numerals and small luminous accents, giving the watch a more "dressy" feel.
- The present Oyster Prince 34 features a contrasting silver and black dial, known as the "Tuxedo" by collectors.
- The model is recognizable today for its appearance in the popular TV series Mad Men, worn by Roger Sterling (played by John Slattery) in the show's fifth season.
- With its striking dial and overall excellent original condition, the present watch is a wonderful example of a classic 1950's wristwatch.
Gallet used the clamshell type of case to develop their first waterproof chronograph case, which became standard on their MultiChron line.
The MultiChron 30 was produced with a variety of dial configurations, the rarest being that of the present example, with black gilt dial and tachometer and telemeter scales
Preserved in excellent, original condition, the present example is a fantastic opportunity to add a "time capsule" chronograph to a watch collection.
- Lemania produced fine mechanical chronograph movements, known for their shock protection and anti-magnetic balance spring. After appearing in the Omega Speedmaster, Lemania movements would go on to be used by many fine Swiss manufacturers including Audemars Piguet, Breitling, and Patek Philippe.
- Lemania was eventually acquired by the Swatch Group through their purchase of Breguet, and today their movements are found in many Breguet watches.
- The present watch is a fine example with a Lemania-signed dial, and features both tachometer and telemeter scales.
- One of the lesser-known models produced by Breitling, the Top Time was introduced in the 1960's and was available in a wide variety of styles. It was advertised as the chronograph for young men with active pursuit.
- The Top Time is the only other model of watch that Sean Connery wears as James Bond besides the Rolex Submariner.
- The Top Time was also the model of choice for car racer Jim Clark, who during his career won 25 Grand Prix races and two world championships.