The present model bears a striking resemblance to the first execution reference 2446 with its fully lumed markers, yet it differentiates itself by featuring the fourth execution narrow stick hands with luminous infill. These simple elements perfectly complement the smaller sub-dials and the all lume markers give the dial a bold yet assuring balance.

The later reference 2446 models also differed from the earlier ones with their Heuer- Leonidas signature on the chronograph bridge and case back. Heuer purchased the Leonidas brand in the early 1960s.

Less than eight examples of reference 2446H with this dial configuration have been found to date therefore finding an example like the present lot in such original and wonderful condition is extremely rare in today's collecting market. The untouched dial, with warm lume hour markers and matching hands, make this a spectacular addition to the savvy collector.