As far as Lee Enfields go the phrase Force matched is a rubbish saying and means exactly nothing in most cases. To many shared parts between factories and assembly lines from the same manufacturer. People who swap parts are destroying the rifles history. A 1913 No1 Mk3 Lithgowicon in mint condition does not exist in real life. In real life it is now a Mk3* looking very very tired to low average condition even with newer furniture. It will have been through at least two FTRs. A 1945 Lithgow could be as close as you will get to new, like a 1953 could be. XPs range from beaters to new.
No4 Mk2s can be NEW.
If the date is pre WW1 or during 1914/18 and it did not belong to a police force you can bet large sums of money it wont look new without a FTR with new parts.