The Nikon MD-4 is a motor drive accessory that attaches to the base of a Nikon 35mm SLR body to provide automated film advance and rewind. It was made for the professional Nikon F3 system during that camera's production era.

Pricing data for the MD-4 at UK saleroom level is very thin: only one verified hammer result is on record, a March 2023 sale at £50, and that remains the sole datapoint as of today in 2026. With a single auction-hammer figure rather than a range, anyone asking what a Nikon MD-4 is worth should treat £50 as indicative for a working but unremarkable example, with cleaner, fully-tested units likely to sell for more and corroded or untested drives for less. Completeness — battery tray, body-side coupling, and original markings — is the main factor that moves the price an MD-4 sells for.