Mystery SMLE (to me) Help ?

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If that was my fore end on a 303 I owned I would scrap it the copper thrust plates are gone and the draws are smacked to pieces all the other stuff markings etc the forumers will offer advice as they will probably know what the A-11 means, you may want to clean all the crud off it so you can get good clear pics especially the date on the wrist strap we cannot see it.
As one of our forumers says it as it is this rifle is a bog standard FTR - 1953 at BSA with a stuffed fore end.
What type of bayonet is the maker those marked and good early ones like JAC (James Arthur Chapman), Chapman, Vickers, MOLE, Lithgow, Wilkinson (Pall Mall marked under the name) command a reasonable price especially if they have their correct scabbard.

My 1916 Lithgow H barrelled and H stamped on the top of the Butts wrist and 5MD (Western Australia) stamped on the stock and action cost me a miserly $100.oo AU had a few small issues but all up cost me $300.oo transitional mag, and all correctly stamped safety catch complete and a Wrights 1916 sling has windage sights and a cut off (This may or may not have been fitted outside the box) cheap as dog poop just a bit lucky.
The 1916 5MD Lithgow 07 and 5MD 1916 Lithgow scabbard was a different beast to get...