The Houghton Watch Pocket Carbine is an early British folding camera produced by the London-based Houghton firm. It belongs to the compact roll-film and plate-camera tradition of the early twentieth century, designed to fold flat enough to be carried in a pocket.

Sales data for the Watch Pocket Carbine is extremely thin: the only verified UK auction hammer result on file is a single Christie's sale at £70 in 2001, so any current price guidance is indicative rather than firm. As of today, comparable early Houghton folders tend to sell for modest sums at saleroom level, and what a Watch Pocket Carbine is worth now will depend heavily on bellows condition, completeness and cosmetic state. Buyers asking how much one sells for should treat the £70 figure as a historical reference point rather than a reliable current market value.