This is one of our recently sold items:
Vintage Rapier No.400 Smoothing Plane in good condition refurbished ready to use. Note: the lever cap has no back plate but locks fine, i’m not totally sure if they ever had them but I did try to add one but this caused the lever to become sensitive so have removed it again as it works better without one. It’s a good users plane but if needed could be replaced with a Record or Stanley lever cap if preferred. Priced accordingly.