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

Semi-automatic rifle L1A1 Cal. 7.62 . Minty parkerized fullered Bowie type blade with a long fuller, first 3 cm blackened. Left ricasso is marked with a H in a Diamant shape. 70 (=trademark Hopkinson Ltd. -Sheffield)  Blackened pommel is riveted to the tang, marked: C in a box and H 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: H.  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, marked: H. in Diamant shape.78/I\ 9600278. No dents.

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.