Russian AK47 bayonet? Variation slot.(ABC N 203)(K 0) (JN 0)

AK47 Kalashnikov. Serial number: S 7882 on the crossguard. Excellent parkerised blade with central fuller and no markings. Excellent blued open pommel and crossguard with muzzle ring MRD 17 mm. Smooth black plastic grips screwed to the blade spine. The grip shows an unknown variation: The first cm of the grip, near the crossguard, shows a different slot. (See last 2 pictures for a comparison with an Model 47 bayonet grip)
Excellent dents free blued steel flat tip B type scabbard with a olive green webbing belt loop and webbing retaining strap.
Excellent unknown variation in an issued condition. Made for Russia?