Heuer 510.501 / Lemania 5100
Heuer ‘1000 Series’ 510.501 Series 2 Day/Date, Black PVD finish, Lemania 5100 movement.
This rugged chronograph is from Heuer’s ‘1000 series’ of chronographs, sometimes referred to at the ‘1000 Lemania Series’, circa 1985/6.
This is the ‘Series 2’ version of the model, which signifies that it has both day and date displays, plus a white hour sub register hand. The day only models (Series 1) has an orangey/red sub register hour hand to match the seconds & minute hands. It is driven by the legendary Lemania 5100 movement, which is highly accurate and an absolute joy to own.
This dial layout design was used in various Heuer models, in slightly different forms by the Montreal, Pasadena and Carrera models. (Montreal/Pasadena were powered by the 7750 movement). I actually prefer the no-name ‘stealthiness’ of this model, it enhances the tool-like military feel. Heuer wasn’t the only watchmaker to utilise this successful design combined with the 5100 movement, it has appeared in numerous guises, many destined for military use. I believe this was because the Lemania 5100 movement was extremely sturdy and capable of withstanding high G-forces, so became the watch of choice amongst fighter pilots.
I love this watch, it’s a real pleasure to own. I simply love it’s understated beauty and ruggedness, a true no-nonsense chronograph with a wealth of history behind it’s movement and design. A design and movement that was so successful I could spend hours unraveling the web of great names associated with it… Orfina, Porsche, Sinn, Fortis, Omega, Tengler, Bund, Silverstone, Carrera, Cortina, Audi, etc etc… you get the picture. It was also a favourite of the great Chuck Maddox, what more could you want?! I can see why there is such a strong 5100 following.
Others have researched this far better than I could, so for some further Lemania reading, check out these superb articles from Calibre 11, On The Dash & Chuck Maddox: