Apart from the import mark just under the charger bridge on the Rt side I reckon that rifle will clean up a treat given a little TLC the bonus is if the bore is like you say it is then thats what one would really be after.
I was wondering how you got onto all of these lost puppies where in another post you said your an auctioneer what a cool job the puppies find you.
Be interesting to see progress on this rifle I have a 1921 Lithgowicon its in about as perfect condition as one could expect from a weapon 98 years old.

Those Lithgow butt stock discs are often sold seperately and go for a good penny.