Credor Tank | March 1983, two-tone, uncommon

I know this isn't a classic "tank" shape, but it fills the same niche in a collection.

This uncommon Credor sports a case shape that's a rounded rectangle - almost a "splat" shape.  It's made of 18k gold and stainless steel, and shows wear commiserate with its age.  There are fine swirls and hairlines throughout.  There are no large dings or scratches.

The important bits are pristine - the crown and cabochon are fully intact, the crystal is unblemished, and the dial is clean.  The dial is pretty cool - the center stripe is brushed, while the top and bottom sections are more of a matte finish.  It's a fun effect. 

The watch is keeping good time, and comes on a black pebbled leather strap.

On a final note - I've never seen another one of these, and while I hesitate to call something "rare," this is as close as it gets.