This reference 570 is a completely astonishing example. Its impeccable state of preservation truly sets this watch apart from its peers today. It is, in our opinion, unpolished, featuring full, thick lugs, and incredible proportions. All brushed and stain finishes are completely original and display how the watch originally left the Patek Philippe factory. Even the milled finish to the case back is original, displaying a sharp difference in finish to the outer portion. One would expect general wear to dull its proportions, yet this example remains sharp and crisp. The watch features two sharp hallmarks to the back of the lugs, which are so deep and and crisp. The edges of the case are furthermore sharp to the touch.

The dial, too, is preserved in flawless condition with no visible blemishes. This is particularly astounding, considering the watch is fitted with a non-waterproof snap-on case back. Most surviving examples are spotted or tarnished due to exposure to the elements. The enamel signature remains intact and raised, having seen no intervention at all.

Even the inside case back bears no service marks of any kind, signifying the movement has never been intervened at all. One can conclude the present watch sat in a safe for most of its live, having been cherished by its owner.

Most surprising is the presence of the Certificate of Origin, original fitted presentation box and even the original Patek Philippe strap, giving us a plethora of signs as to how a large Calatrava would have been sold over 45 years ago.