The Nikon M is a 35mm rangefinder camera produced by Nippon Kogaku in the early 1950s. The "no sync" designation refers to the original variant produced before flash synchronisation was added to the body, making it a transitional model in Nikon's early rangefinder line.

Evidence on what a Nikon M (no sync) is worth at UK saleroom level is extremely thin: a single auction-hammer record of £3,600 from 2003 is the only data point available, and that result reflects collector demand for early Nippon Kogaku rangefinders rather than a current 2026 trading range. Today, prices for clean, original no-sync examples sit firmly in the four-figure collector bracket, with condition, matching serials and original accessories driving most of the variation.