Any manufacture of 4T, including those converted to L42's other than BSA Shirley rifles are scarce. Only relatively few Maltby, Savage, Long Branch, & Trials rifles, were converted to 4T's, & very few indeed produced at Fazackerley. Add to this that probably a little less than 1100 L42's were produced in total, so it gives you some idea of what you have (assuming we are correct & that it is a Maltby). And yes, when it was originally produced during (probably) 1941 it would have left the Maltby factory dressed in beech woodwork. If its wood never needed changing it will still be stocked in beech......although most of the L42 era wood used in refurbs was also beech.

Hope this helps a little.