1776 Atelier 621-1788

The 621-1788 is a manual-winding movement manufactured by 1776 Atelier, based on the Swiss 6498 architecture and heavily modified with proprietary components. It features 17 jewels and Incabloc shock protection. The movement is manufactured, built, regulated, and finished in the United States by 1776 Atelier, incorporating a proprietary three-quarter bridge and a main plate reduced by just over 1mm in diameter. It serves as the foundation for two of the brand's inaugural collections.