The Kowa Kallo 140 is a 35mm fixed-lens rangefinder camera made by Japanese maker Kowa Optical. It is a leaf-shutter viewfinder model from the era when Japanese manufacturers were producing compact rangefinders for the consumer market.

Auction data for the Kallo 140 is very thin: the only recorded UK saleroom result is a single hammer price of £240 from 2003, so any present-day value in 2026 should be treated as indicative rather than established. With just one data point the Kallo 140 is effectively a niche collector item, and what it sells for today depends heavily on cosmetic condition, working shutter, and the presence of the original case.