Nikon Camera Parts 2 Nikonos IV-A Locking Knob PreviousNikonos IV-A ASA Base Plate NextNikonos IV-A Sprocket Gear Nikonos IV-A Locking Knob Nikonos IV-A Locking Knob $20.00 New Old StockPart# 9F4B-FA1-213 sold out Add To Cart Facebook0 Twitter Tumblr You Might Also Like Nikon FA Rewind Base $30.00 Nikon DP-1 Release Cam Lever $12.00 Nikonos III Take-Up Shaft (B) $22.00 Nikonos IV-A Lever Spring $20.00 sold out Nikon Eyepiece Correction Lens (+1.0) $20.00