Hamilton Twin Crown Super Compressor Diving Watch Travel As this is auction is

As this is auction is for charity

this particular Datejust Reference 1601 features a steel case

These early Autavias feature large steel screw or snap-back cases and high-grade Valjoux manually winding chronograph movements

and that translates into a classic style that works in any decade

Hamilton Twin Crown Super Compressor Diving Watch Travel As this is auction isSuper Compressor diving watches are a category worthy of study to any vintage sports watch enthusiast. The name refers their case design; a "compressor" system was designed to become more watertight the deeper the watch went under water. The secret was a gasket system in the case back that was compressed as the water pressure increased. Although compressor cases proved to be more complicated to make and no more effective than well designed screw