The Detrola 400 is a 35mm film camera produced by Detrola Corporation, a US maker active in the mid-20th century. It sits among the more uncommon American-made 35mm models from that era and surfaces only occasionally on the collector market today.

Auction data for the Detrola 400 is extremely thin: a single UK saleroom hammer result from June 2022 saw one example sell for £1,700, which is a wholesale price excluding commission. With only one data point on record, that figure is best treated as an outlier rather than a reliable guide to what a Detrola 400 is worth in 2026, and the price any given example sells for today will depend heavily on condition, completeness and bidder interest on the day.