The Krügener Delta Klapp is a German folding plate camera introduced in 1905, marketed under the Teddy designation by the Frankfurt-based maker Dr. Rudolf Krügener. It is an early-twentieth-century strut-folding plate camera aimed at the amateur market of its day.

Public auction evidence for this model is extremely thin: a single UK saleroom hammer result of £1,375 from 2004 is the only data point on record, and no recent sales are available to establish what one is worth in today's market. With only one historic auction-hammer figure to reference, any current price guidance is provisional, and condition, completeness of the original plate holders, and bellows integrity will heavily influence what an example sells for.