The Welta Dubla is a folding roll-film camera produced by the German manufacturer Welta Kamerawerke, which operated from Dresden in the early-to-mid twentieth century. It belongs to the family of medium-format folders that dominated amateur photography in continental Europe before the widespread adoption of 35mm.

Sales data for the Dubla is extremely thin: a single UK auction-hammer result from October 2017 saw an example sell for £120, and that figure remains the only documented data point we have today. With just one sale on record, it is not possible to quote a reliable median or range for what a Dubla is worth in 2026, and any price a buyer sees today should be weighed against that lone benchmark rather than a settled market.