The Gaumont Block-System is an early French-made plate camera from the firm founded by Léon Gaumont in Paris. It belongs to the late 19th / early 20th century period of European plate photography and was sold as a compact box-form instrument for amateur use.

Sales data for the Block-System is extremely thin: a single UK auction hammer result on record stands at £550 (2004), which gives a reference point for what one clean example has sold for at saleroom level rather than a reliable today-market price. With only one data point, it is difficult to state a current value or median worth with any confidence in 2026, and condition, completeness of plate holders and originality will heavily influence what any individual example sells for.