The Krügener Delta in the 9x12 magazine/detective configuration is an early German plate camera designed for concealed or quick-action use, taking 9x12cm glass plates fed from an internal magazine. Krügener of Frankfurt produced detective-style cameras of this kind in the late 19th century, when box-form magazine designs were a common alternative to folding plate cameras.

Sales data for this specific Krügener Delta variant is extremely thin: the only recorded UK auction hammer result on file is £313 from 2003, so a meaningful current price band cannot be derived. As of today in 2026, anyone trying to work out what a Krügener Delta 9x12 magazine/detective without finders is worth should treat that single saleroom figure as a historical reference point only, not a guide to what the camera sells for now.