calendar available. The Endeavour Perpetual Calendar Purity sees the Schaffhausen-based Manufacture pursue its carefully thought-out approach which foregoes branding, focusing on the refined understatement of this model. Available in a limited edition of 50 pieces. The Endeavour Perpetual Calendar Purity is the ultimate expression of minimalism and purity, with no logo on the dial and the simplicity of double indices. This watch radiates a timeless beauty, proving that true luxury needs no unnecessary adornment.