Fairly typical civilian-sourced P53, but in much better condition than most. Can't see the ramrod too well to make any comment on that. The metalwork does need de-rusting and cleaning up and the stock needs that varnish removed and re-oiled. The 'TOWER' mark was applied to all locks made by Birmingham and London contractors and the barrel is Birmingham proofed. It may even have some Enfield approved parts inside, but it will probably be prone to suffer the main problems that all these cilivilan contract weapons had, like interchanagebility, but it may equally be one of the good ones.
When stripped down, the names of the contractors for each assembly are often stamped on the inside of the component parts.