The Perken Rayment's Patent is an early British-made camera associated with the London optical maker Perken, Son & Rayment. It is a period instrument from the plate-camera era rather than a modern film or digital body, and survives today primarily as a collector's item.

At UK auction, hammer prices for the Rayment's Patent have been highly condition- and completeness-dependent, with recorded saleroom results ranging from £56 to £384 and a midpoint around £220. As of today in 2026, the value of any given example sells for a figure well inside that band depending on bellows, lens and overall presentation, and buyers should expect the price a clean outfit is worth to sit toward the upper end of the range.