The pictures show you have either a No4 Mk2 stock set, or a damaged No4 Mk1 stock set.
The only difference is across the 'back end' by the draws - if it is 'open' it is a Mk2, if it is 'bridged with wood then it is a Mk1
The draws and 'bridge' area are easily damaged by incorrect disassembly but the photos are not clear enough to see if the open end is due to damage or not.
You should be able to see if the wood is cleanly cut and shaped, or is it rough and broken ?
It is not broken and I now see the "BLUR" Doh I will try an edit for better pics