English L1A4 bayonet by Hopkinson. (ABCN171-2)(K0)(JN0)

Semi-automatic rifle L1A1 Cal. 7.62 . Minty dark finished fullered Bowie type blade with a long fuller, first 3 cm blackened. Left ricasso is marked with a H in a Diamant shape. (=trademark Hopkinson Ltd. -Sheffield)  Blackened pommel is riveted to the tang, marked: C in a box and R in a box on the reverse pommel side. T- type mortise slot. Straight type crossguard with muzzle ring MRD 14.6. Facing the blade the crossguard is marked C in a box.  Black painted metal grips are riveted to the tang by two hollow rivets. Left grip is correct and crisp NATO code marked: L1A4 9600259 S.M. (S.M. =Hopkinson Ltd.-Sheffield)
Minty and correct blackened steel No. 5 MK1 scabbard with round frog stud and brass throat. No dents.
Comes with its Minty and correct green nylon SLR frog as found.
Minty L1A4 set.

Last model of the L1 serial, introduced in the beginning of the 70. Only Hopkinson Ltd. of Sheffield made this L1A4 bayonet with a riveted pommel (and not brazed) and a different Bowie tip. (Also see the book: British and Common wealth bayonets from Ian Skennerton. Page 262.)
The L1A4 model is less common than the L1A3 bayonet.