The Breitling Reference 815 is one of our favorite chronographs from the 1960s.

They feature all the hallmarks of a great sporty chronograph, including a perfectly sized 38m case with thick, straight lugs, a highly legible dial with triple-subsidiary register layout, and a tough as nails (and supremely accurate) Valjoux 7736 manually-winding chronograph movement operated by barrel pushers. And best of all, they remain under the radar and thusly less expensive than many of their period counterparts.

The example we have on offer here isn't your average 815, however. This beautiful silver Panda Dial variant was issued by the Swedish Government to employees of their state-run telephone company, the Tillhör Televerket, and features a Swedish Royal crown crest in place of Breitling's signature on the dial, and a gorgeous, even light 'ice blue' patina throughout.

Additionally, it features the sought after 38mm steel case, rather than the more commonly seen chrome-plated variation, a signed crown, an acrylic crystal, and a Valjoux Calibre 7736 hand cranking movement within.

We've had the pleasure of offering a couple of these unusual chronos in the past, but this is perhaps the cleanest dial we've ever seen - and a cool story to boot.

This is a tremendously cool and rare chronograph model with an awesome story.

And that, dear friends, is what collecting vintage is all about.