As you may have noticed, chunky diving watches are in vogue at the moment. But unless you’re in the trade, you might not see it as a business opportunity…

Case in point: this Jaeger-LeCoultre Polaris, one of only 1700 ever made, and currently residing in our Watch Guy’s enormous metal safe. We could go on and on about the details—the elegant circular face, the indestructible workmanship, those 16 divots in the back that let it ring underwater—but to a businessman, the most important detail is the skyrocketing value.

Our Watch Guy has been holding onto this one for upwards of five years now, strictly for personal use. The current price tag is $15,000—on the low end for a Polaris in this condition, and easily twice what he paid for it. And based on what we’re seeing on tumblr, we don’t imagine it’s going down any time soon.

As always, if you want to take the thing home, all you have to do is drop us a line. Now, to invest in Amiga futures.