The Sinclair Tropen Una No.2 is a tropical-pattern folding plate camera, finished in teak with brass fittings rather than the leather-covered metalwork of standard models. Tropical cameras of this kind were sold for use in hot, humid climates where conventional bodies suffered, and the Una line sat at the upper end of the early 20th-century British folding-camera market.

Sales data for the Tropen Una No.2 is extremely thin: the only recorded UK auction hammer result we have is £2,000 from December 2010, which reflects a wholesale saleroom price rather than a dealer retail figure. With just one data point on file, today there is no reliable median or range to quote, and what a Tropen Una No.2 is worth in 2026 will depend heavily on condition, completeness of the original lens and shutter, and the state of the teak and bellows when it next sells.