The Murer (strut-folding, 4.5x6) is a small-format strut-folding plate camera producing 4.5x6 cm exposures, built by the Italian maker Murer & Duroni. It belongs to the early-twentieth-century class of pocket-sized strut folders intended for amateur use on glass plates.

Auction data for this model is thin: a single UK saleroom hammer result of £100 in October 2025 is the only verified data point, so today there is no meaningful range to quote. As a wholesale auction figure (excluding buyer's and seller's commission), that price suggests the camera sells for modest sums when it does appear, though a single sale is not enough to establish a reliable value.