The Goerz Westentaschen Tenax, often called the Vest Pocket Tenax, is an early 20th-century German strut-folding plate camera built to slip into a waistcoat pocket. The Tropen variant is the tropical specification, typically distinguished from the standard model by its construction intended for use in hot, humid climates.

Hammer prices for the Westentaschen Tenax Tropen at UK auction have sat in the £500–£550 range, with a median around £530 based on the limited record available. As of 2026 it remains a thin market with infrequent appearances, so what one sells for at saleroom level depends heavily on cosmetic condition, completeness of the original shutter and lens, and the integrity of the leather and metalwork — buyers should treat any single result as indicative rather than a firm guide to value.