Joseph, you are killing me with your new acquisitions. It's a good thing, however.
This Explorer really complements not only your enamel Mercator but really adds to your growing collection of Vacheron's alternative time displays. We need a family portrait of all of these in your collection. That will really kill me.
So, is the caliber in the Columbus the same as the one in the legendary Sputnik? Are there any differences technically?
And I am curious about the cuff links -- they look to have a Maltese Cross on them. Are they Vacheron related?
Congratulations on this amazing addition to your collection, Joseph.
Best regards,
respo