SINN 103 SA B E Limited Edition 500 Piece Blue Dial Swiss Valjoux 7750 Automatic We take trades against any of our watches!!! Sinn, best known for its over-engineered tool watches. Is the epitome of no-nonsense German design. Since the Frankfurt brands watches are most commonly rendered in black and white, a sunburst blue-dialed Sinn with creamy lume, like this new limited edition 103 Sa B E pilots chrono, attracts […]