The Zeiss Ikon Nixe 551/6 is a folding plate and rollfilm camera from the early Zeiss Ikon era, produced in Germany following the 1926 merger that formed the company. It was a medium-format folding model aimed at amateur photographers of the period.

Sales data for the Nixe 551/6 is extremely thin: a single recorded UK auction hammer result from 2004 sold for £115, which gives only a historical reference point rather than a reliable current value. With no recent comparables, what a Nixe 551/6 is worth today depends heavily on completeness, bellows condition and shutter function, and any current price guidance should be treated as indicative only until further saleroom results emerge.