For Alpina, we conducted an in-depth archival research project focused on the elusive Tropic-Proof and the brand’s legacy of sharp marketing and product differentiation. Working primarily with The Watch Library and Europa Star archives, complemented by specialist books and watchmaking publications, we reconstructed the model’s historical context through the lens of competition, design trends, technical choices and market positioning. Delivered as both an oral and written presentation, our research showed that despite scarce documentation, the Tropic-Proof strongly embodies Alpina’s DNA. Its name alone functions as a strategic message, instantly evoking travel, exploration and resilience, while the watch itself hits a rare sweet spot for vintage collectors, combining classic design cues, a robust waterproof case, an in-house manual calibre and highly legible, patina-prone details. Ultimately, we framed the Tropic-Proof as a late, pure expression of Alpina’s pre-quartz identity, a practical tool-watch descendant built to balance durability, clarity and accessibility.